William H. Ukers (author)
Five years later the recorded yield was 25,960,000 pounds, the high-water mark of Sumatra production
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly supported by the passage. The text explicitly states 'Five years later the recorded yield was 25,960,000 pounds' in reference to Sumatra production five years after 1852, which correctly places it at 1857 and identifies this as 'the high-water mark of Sumatra production.'
- qualifier_fidelity 0.90 pass — The claim is largely faithful to the passage. The quote is verbatim and supports the claim. All qualifiers are appropriate: viewpoint is correctly 'author' (passage states facts, not attributed to a named source), stance is 'asserts' (matches the factual presentation), sentiment is 'neutral' (appropriate for objective production data), and context is empty (passage does not restrict meaning to a particular sense). The time qualifier is nearly perfect, with 'when' correctly showing 'five years later' relative to 1852 and normalized dates of 1857. The only minor note is that 'five years later' is a relative temporal reference rather than an absolute one, but this is faithfully captured with the normalized dates 1857-1857. The quote fully supports the claim about the yield amount.
