An Unflattened Identity and Change Knowledge Graph

caffeine, volatile oil, tannic acid unspecified sense

concept · 1 mention

DBpedia ↗ChemicalSubstanceDrug

Defining properties

Perspectives

Claims grouped by the voice that makes them.

P. L. Simmonds (author)

  • coffee has_principal_constituents caffeine, volatile oil, tannic acid present (implied)
    assertsneutralsource: pg57340
    Coffee has been analysed by several chemists, and though the results obtained differ in some slight degree, yet it seems pretty clear that the principal constituents to which its hygienic and medicinal properties are due are caffeine, a peculiar volatile oil generated in the roasting, and a kind of tannic acid.
    judge verdicts (2)
    • groundedness 1.00 pass — The claim is directly stated in the passage: 'the principal constituents to which its hygienic and medicinal properties are due are caffeine, a peculiar volatile oil generated in the roasting, and a kind of tannic acid.'
    • qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage: - Viewpoint: correctly attributes the statement to the author (no named source). - Stance: accurately reflects the assertive tone of the passage. - Sentiment: neutral, matching the factual presentation. - Time: appropriately set to present/implied without explicit temporal restriction. - Context: empty as the passage does not restrict to a specific sense or role; the claim about coffee's constituents is general. - Quote: verbatim matches the passage excerpt provided.

Change over time

present (implied)
  • has_principal_constituents coffee