William H. Ukers (author)
Polstorff obtained only 0.23 percent from the coffee which he examined
judge verdicts (2)
- groundedness 0.70 pass — The passage directly states that Polstorff obtained 0.23 percent from coffee he examined, and this is mentioned in the context of discussing trigonellin. The claim accurately represents what is stated, though the passage does not explicitly name trigonellin in that specific sentence, the contextual placement makes the connection clear and supported.
- qualifier_fidelity 0.70 pass — The claim is faithful to the passage with one caveat: the quote supports the subject and predicate accurately, and the qualifiers (viewpoint as 'author', stance as 'asserts', sentiment as 'neutral', null time, empty context) all match the passage's framing. However, the claim's object is 'trigonellin' while the quote specifies 'only 0.23 percent' without explicitly naming the substance—the reader must infer from context that this percentage refers to trigonellin. The passage does state 'Polstorff obtained only 0.23 percent from the coffee which he examined' within a paragraph about trigonellin, making the inference reasonable and the claim valid, though the quote is slightly ambiguous about which compound yielded that percentage.