William H. Ukers (author)
- coffee tree have given paying crop until twenty or thirty years old twenty or thirty years old ⟨some trees⟩
some trees have given a paying crop until twenty or thirty years old
judge verdicts (2)
- groundedness 1.00 pass — This claim is directly stated in the passage. The exact quote 'some trees have given a paying crop until twenty or thirty years old' appears verbatim in the second paragraph, accurately representing what the passage asserts about coffee tree productivity longevity.
- qualifier_fidelity 0.85 pass — The claim is largely faithful to the passage. The viewpoint, stance, sentiment, context ('some trees'), and quote are all accurate and properly extracted. However, there is a minor issue with the 'time' qualifier: the passage does not provide explicit normalized dates for 'valid_from' and 'valid_to'. The passage states 'twenty or thirty years old' as an age range, not as calendar dates or normalized temporal bounds. The claim should either omit valid_from/valid_to (using only 'when') or clearly indicate these represent ages rather than dates. The current representation slightly conflates age with time period, though the intent is understandable.