William H. Ukers (author)
- German drip coffee maker employs a plug that provides air pressure to hold back infusion late nineteenth century ⟨late nineteenth century⟩
A popular German drip coffee maker of the late nineteenth century employs a plug in the spout which provides air pressure to hold back the infusion
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage. The final paragraph explicitly describes that 'A popular German drip coffee maker of the late nineteenth century employs a plug in the spout which provides air pressure to hold back the infusion until the plug is removed,' which matches the subject, predicate, and object of the claim exactly.
- qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly attributed to the author (the passage itself states this fact). The stance is appropriately 'asserts' as the passage presents this as factual information. The sentiment is neutral, matching the passage's neutral tone. The time qualifier 'late nineteenth century' is faithful to the passage's explicit temporal framing, with normalized dates (1870-1900) being consistent with that period. The context 'late nineteenth century' appropriately restricts the claim to the specific historical period discussed. The quote appears verbatim in the passage and directly supports the claim.