procedure
extract with petroleum ether (boiling point 35 deg. to 50 deg. C.) for 16 hours
judge verdicts (4)
- groundedness 1.00 pass — The claim is directly stated in the passage. The first method explicitly instructs to 'extract with petroleum ether (boiling point 35 deg. to 50 deg. C.) for 16 hours' when processing coffee samples, fully supporting the subject, predicate, object, and time duration specified in the claim.
- qualifier_fidelity 0.60 fail — The qualifier 'viewpoint' is unfaithful. The passage is procedural/instructional text from an official methods document, not attributed to a named source or author. The viewpoint should be 'procedure' or null rather than 'author'. Additionally, the 'time' qualifier is problematic: '16 hours' is a duration, not a 'when' timestamp. The time object should represent the temporal scope as a duration or extraction period, not use 'when' as a key. The quote is accurate and the other qualifiers (stance, sentiment, context) are appropriate.
- groundedness 1.00 pass — The claim is directly stated in the passage. The first procedure explicitly instructs to 'extract with petroleum ether (boiling point 35 deg. to 50 deg. C.) for 16 hours' when processing coffee samples, making this a fully supported claim with no rewording needed.
- qualifier_fidelity 0.95 pass — The claim faithfully captures the qualifiers from the passage. Viewpoint correctly identifies this as a procedure/method. Stance appropriately uses 'asserts' rather than dispute. Sentiment is neutral as befits a technical procedure. Time is accurately represented as 'for 16 hours' matching the passage. Context 'lipid extraction procedure' is reasonable though the passage doesn't explicitly label the purpose—it's inferred from the method. Quote is verbatim and supports the claim. Minor deduction for context being slightly interpretive rather than explicitly stated in passage, though this is standard inference for technical procedures.