William H. Ukers (author)
John Arbuckle is granted a United States patent on a coffee-cleaner-and-grader.
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage: '1874--John Arbuckle is granted a United States patent on a coffee-cleaner-and-grader.' All elements (subject, predicate, object, and time) match exactly.
- qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly attributed to the author (the passage presents this as historical fact without attribution to a named source). The stance is appropriately 'asserts' as the passage states this as fact. The sentiment is neutral, matching the passage's neutral tone. The time qualifiers (when: 1874, valid_from: 1874, valid_to: 1874) accurately reflect the date given in the passage. The context is empty, which is appropriate as the passage provides no restrictive context for this claim. The quote matches verbatim from the passage and supports the claim.