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                    {
                        "@value": "Downloaded Dryad version 157600 and checked the SHA-256 of DATAeggshape.csv, DATAoviducts.csv and README.txt against that version's API digests. Relative egg size R is mean egg volume in mL (avVOL) divided by female body mass in g (ADmass); 944 species have both, so the pre-registered size-pair order stops at this first tier and the Amniote life-history file is not opened. Clause A tests pointedness (avPT; larger means the widest point lies farther toward one pole) against log10(R) with the pre-registered Spearman and upper-decile Mann–Whitney rules, then the family-mean sign check. Clause B keeps oviduct rows whose binomial matches the egg table, sets isthmus diameter to lumen perimeter divided by pi, and applies the pre-registered Spearman and rank-OLS rules. Polar asymmetry, elongation and inter-ischial distance are calculated and stored and do not enter the verdict."
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                        "@value": "Measured: 0.09169960219458874 Spearman rho of pointedness (avPT) versus log10(egg volume mL / female mass g) (n = 944, two-sided Spearman p = 0.004807730708194124). Interpretation: Thompson's 'asymmetrical, posteriorly tapered' is the dataset asymmetry index, not elongation. 'Large relative to the parent bird' is egg size divided by adult female body mass. The size pair is chosen by a locked availability order, stopping at the first tier with n >= 40, and is never chosen by the sign of the correlation: (1) egg size and female body mass inside the Dryad egg table; (2) Amniote egg_mass_g / female_body_mass_g joined on binomial; (3) Dryad egg size / Amniote female_body_mass_g; (4) Amniote egg_mass_g / adult_body_mass_g. Egg size preference inside a table is volume, else mass, else length times breadth squared. 'Pressure in the oviduct' is not measured; clause B tests only the anatomical implication Thompson states in the same sentence, that a large egg in a narrow oviduct is tapered and a large egg in a wide oviduct need not be. Oviduct length is rejected as a stand-in for diameter. Species are exact binomials (first two tokens, case-insensitive); no synonym list is applied after seeing the matches. Non-birds are out of scope. The named birds (guillemot, curlew, sandpiper, tern, apteryx) are illustrations; only Apteryx, if present, is reported as a single-species check and does not decide the verdict."
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                    {
                        "@value": "Species-level egg asymmetry (a pointedness index, not elongation alone), an egg-size measure, and adult female body mass for birds, plus an oviduct diameter or width for the mechanism clause. Public, licenced for reuse, independent of Thompson 1917. Pelvic measurements may be reported. Intramural pressure is admissible but not required for clause A. Phylogeny files may be used only as a reported robustness check; the verdict uses species and family means."
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                "https://w3id.org/delphi/ontology/assessmentType": [
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                        "@value": "claim-test/0.1.0"
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                "https://w3id.org/delphi/ontology/dataKind": [
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                        "@value": "biological"
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                "https://w3id.org/delphi/ontology/disconfirmingObservation": [
                    {
                        "@value": "The most tapered eggs are not the relatively large ones (negative or null rank correlation and an upper-asymmetry decile whose eggs are not relatively larger), or taper decreases as the egg is tighter in the oviduct."
                    }
                ],
                "https://w3id.org/delphi/ontology/evidenceAgainst": [
                    {
                        "@value": "Among 132 species with an ischial width, pointedness versus egg breadth / that width has rho -0.18530364773836044 (p 0.033404610697687194). This comparison does not decide the verdict."
                    },
                    {
                        "@value": "Elongation (avEL) versus the same relative egg size has Spearman rho -0.05092051499259413 (p 0.1179460823903142, n 944). Elongation is a different shape component and is outside the claim."
                    },
                    {
                        "@value": "Oviduct rows are Galliformes only. Clause A covers 193 families; it is a comparative pattern among those species, and the pressure mechanism remains untested."
                    },
                    {
                        "@value": "Polar asymmetry on the same 944 species has Spearman rho 0.08062419065079167 and two-sided p 0.013215918651229447, which misses the pre-registered 0.01 cutoff, while its upper-decile comparison does pass (median R 0.1184872175035261 versus 0.08236411264816285, p 2.499817766915697e-09). Under the same rules that index would be scored mixed. The verdict uses pointedness."
                    },
                    {
                        "@value": "Seven oviduct names are absent from the 955-species table and were dropped under the exact-binomial rule: Chrysolophus pictus, Coturnix chinensis, Coturnix japonica, Crossoptilon crossoptilon, Lophura swinhoii, Numida meleagris, Rollulus rouloul. Coturnix chinensis appears in the egg table as Excalfactoria chinensis and was not relabelled."
                    },
                    {
                        "@value": "The Amniote life-history database was not opened. Female mass and egg volume are columns of the Dryad egg table, which is the first size pair in the pre-registered order and clears n >= 40."
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                    {
                        "@value": "The oviduct clause is inconclusive (reason other). Of 28 galliform rows, 21 matched an egg-table binomial. Pointedness versus egg breadth / isthmus diameter has rho 0.23896103896103899 (p 0.2968491826193771). The partial rank coefficient on log isthmus diameter, controlling for log relative egg size, is -0.4861091150295727 (two-sided p 0.0605430300927996, df 18). Intramural pressure was not measured."
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                        "@value": "The size–taper association is small. Spearman rho of pointedness versus log10(R) is 0.09169960219458874 (two-sided p 0.004807730708194124, n 944). The upper decile of pointedness (n 95) has median R 0.11430069930069929 mL/g; the less-pointed half (n 472) has median R 0.08018416566524933 mL/g (one-sided Mann–Whitney p 1.0670514040597176e-08)."
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                        "@value": "Unweighted family means (n 193) have Spearman rho 0.08310019496821751 (p 0.25057505243350675). The species-level p-value treats species as independent. The pre-registered family gate downgrades a clause only when that correlation reverses sign, which it does not."
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                        "@value": "Uria aalge is at percentile 99.78813559322035 of pointedness and percentile 61.016949152542374 of relative egg size; Uria lomvia is at 99.25847457627118 and 61.652542372881356. Numenius arquata is at 97.35169491525424 and 50.105932203389834. Apteryx mantelli is at percentile 92.26694915254238 of relative egg size and percentile 25.95338983050847 of pointedness."
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                        "@value": "Bird species with more posteriorly tapered eggs have larger eggs relative to female body mass, and taper also increases as egg breadth becomes large relative to oviduct diameter, including after accounting for relative egg size."
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                        "@value": "Pre-registered. Clause A REFUTES if n_A >= 40, Spearman rho(A, log10(R)) < 0 with two-sided p < 0.01, and the upper-decile median R is lower than the bottom-half median R. Clause B REFUTES if n_B >= 20 and Spearman rho(A, egg_breadth/D) < 0 with two-sided p < 0.05, and the partial coefficient on D is not significantly negative. A clause is MIXED if its two subtests disagree in sign at the stated significance, or if only one of the two subtests meets its support rule. A clause is inconclusive with reason underpowered if the sample-size minimum is missed, data-unavailable if the file or the required column cannot be obtained, or not-operationalizable if asymmetry or oviduct diameter cannot be mapped from the file's own definition. The claim is MIXED if the two clause verdicts are not the same supports or the same refutes and neither is inconclusive; if one clause is supports or refutes and the other is inconclusive, the top-level verdict equals the scored clause and the unscored clause is named in caveats; if both are inconclusive, the claim is inconclusive. Thresholds are not revised after the data are opened. Direct oviduct pressure is not in the planned datasets; absence of a pressure transducer does not by itself refute clause B."
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                        "@value": "Across bird species, the most posteriorly tapered eggs are those large relative to the parent, and, as a separate clause, taper increases as the egg is large relative to the oviduct that must pass it."
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                        "@value": "Spearman correlations and a one-sided Mann–Whitney comparison of relative egg size between the upper decile and the lower half of asymmetry, plus an OLS of rank(asymmetry) on rank(log oviduct diameter) controlling for rank(log relative egg size). Thresholds: clause A p < 0.01 and n >= 40; clause B p < 0.05 and n >= 20. Family-mean Spearman can downgrade a directional clause to mixed. Clauses are combined only after each is scored; disagreement yields mixed."
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                        "@value": "Pre-registered, two clauses scored separately. Clause A (size–asymmetry) SUPPORTS only if all hold: n_A >= 40 species with a finite asymmetry index A (oriented so larger means more posteriorly tapered, using the dataset README definition and not the result) and a positive relative egg size R; Spearman rho(A, log10(R)) > 0 with two-sided p < 0.01; species at or above the 90th percentile of A have a greater median R than species at or below the 50th percentile of A, with a one-sided Mann–Whitney p < 0.01. Clause B (oviduct implication of the pressure clause; pressure itself is not measured) SUPPORTS only if all hold: n_B >= 20 species with A, egg breadth and an oviduct diameter or width D (oviduct length is not a diameter); Spearman rho(A, egg_breadth/D) > 0 with two-sided p < 0.05; and, on n_partial >= 20 species that also have R, the OLS coefficient of rank(A) on rank(log10(D)) controlling for rank(log10(R)) is negative with two-sided p < 0.05. The claim SUPPORTS only if both clauses support. A family-mean Spearman (unweighted species means, families with a finite mean, computed only if at least 15 families) that has the opposite sign and either |rho| >= 0.1 or two-sided p < 0.10 downgrades that clause from supports or refutes to mixed. Pelvic aperture, if present, is reported and does not decide either clause."
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