William H. Ukers (author)
- liberica reaches maximum yield in over one thousand pounds an acre after fifteen or sixteen years ⟨after fifteen or sixteen years⟩
after fifteen or sixteen years, when a maximum of over one thousand pounds an acre is attained
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly supported by the passage. The text explicitly states that liberica coffee trees reach 'a maximum of over one thousand pounds an acre' after 'fifteen or sixteen years,' which precisely matches the claim's subject, predicate, object, and timing.
- qualifier_fidelity 0.85 pass — The claim is largely faithful to the passage. The quote is verbatim and accurate. However, there is a minor issue with the 'context' field: it should clarify that this refers to liberica coffee trees specifically, not just repeat the temporal qualifier. The context field should either be null (since the passage doesn't explicitly restrict this to a particular sense or role beyond the coffee variety already specified in the subject) or state 'liberica coffee trees' to fully reflect the passage's scope. The viewpoint, stance, sentiment, and time qualifiers are all correct.