William H. Ukers (author)
He built the first commercial machine under his patent in 1893
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage: 'He built the first commercial machine under his patent in 1893.' The subject (Otto), predicate (built first commercial machine), object (roasting machine), and time (1893) are all explicitly mentioned and accurately represented.
- qualifier_fidelity 0.90 pass — Viewpoint should be 'passage' rather than 'author' since the passage itself asserts this fact without attributing it to a named source. All other qualifiers are faithful: stance is correctly 'asserts', sentiment is neutral, time matches the passage's 1893 date, context accurately reflects 'under his patent', and the quote is verbatim and supports the claim.