William H. Ukers (author)
- Emmerich Machine Factory and Iron Foundry was granted a german patent on a ball roaster ball roaster patent in 1892
in 1892 it was granted a German patent on a ball roaster
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage: 'in 1892 it was granted a German patent on a ball roaster.' All elements (subject, predicate, object, and time) match exactly what is written.
- qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly attributed to the author (passive voice narration), the stance is 'asserts' (straightforward factual statement), sentiment is neutral, the time qualifier matches the passage exactly ('in 1892'), and the quote appears verbatim and supports the claim. The context is appropriately empty as the passage provides no additional sense or role specification for the ball roaster patent.