Ceylon leaf disease unspecified sense

William H. Ukers (author)

• Ceylon leaf disease attacked coffee plantations 1869 ⟨Ceylon⟩
  assertsneutralsource: coffee-pg28500

  the so-called Ceylon leaf disease attacked the plantations in 1869

  judge verdicts (2)

  • groundedness 1.00 pass — The claim is directly stated in the passage with the exact wording: 'the so-called Ceylon leaf disease attacked the plantations in 1869'. All components (subject, predicate, object, and time) match precisely with the source material.
  • qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is appropriately attributed to the author (the passage presents this as factual history without naming a specific source). The stance is correctly 'asserts' as the passage states this as fact. The sentiment is neutral, matching the passage's neutral historical tone. The time qualifier correctly specifies 1869 as the year of the attack, with valid_from as 1869 and valid_to as null (the passage does not specify an end date for the disease's activity). The context is appropriately set to Ceylon. The quote is verbatim from the passage and directly supports the claim.
• Ceylon leaf disease destroyed coffee trees a few years later ⟨Ceylon⟩
  assertsneutralsource: coffee-pg28500

  had practically destroyed all the trees of the country

  judge verdicts (2)

  • groundedness 1.00 pass — The claim is directly supported by the passage. The text explicitly states that Ceylon leaf disease 'had practically destroyed all the trees of the country' a few years after attacking plantations in 1869, and this destruction occurred in the context of Ceylon's coffee industry.
  • qualifier_fidelity 0.85 pass — The claim is largely faithful to the passage. The quote is verbatim and accurately supports the claim. Viewpoint, stance, and sentiment are all appropriate. The context is correctly specified as Ceylon. However, the time qualifier has a minor issue: 'valid_from' should be null or omitted since the passage does not attribute the destruction to 1869 itself—rather, it states the disease 'attacked' in 1869 and 'a few years later' the destruction occurred. The 'valid_from' of 1869 conflates the attack date with the destruction date. The 'when' value of 'a few years later' is correct and faithful to the passage's temporal language.