Adis Abeba on the backs of pack mules unspecified sense

William H. Ukers (author)

• coffee went to Adis Abeba on the backs of pack mules at one time ⟨at one time⟩
  assertsneutralsource: coffee-pg28500

  At one time a fair amount of coffee from this region went to Adis Abeba on the backs of pack mules

  judge verdicts (2)

  • groundedness 1.00 pass — The claim is directly stated in the passage with the exact quote: 'At one time a fair amount of coffee from this region went to Adis Abeba on the backs of pack mules.' The subject, predicate, and object are all explicitly mentioned as written.
  • qualifier_fidelity 0.90 pass — The claim is largely faithful to the passage. The quote appears verbatim and accurately supports the predicate and object. The viewpoint (author), stance (asserts), and sentiment (neutral) are all appropriate. The time qualifier correctly captures the temporal scope indicated by 'at one time' in the passage, with valid_from and valid_to properly set to null since no specific dates are given. However, the context field should be empty or null rather than repeating 'at one time' - context refers to restrictions on the sense or role of the subject/object (e.g., coffee as a commodity/export), not the temporal scope which is already captured in the time field. This is a minor issue with field usage rather than qualifier fidelity per se.