idchkg
An Unflattened Identity and Change Knowledge Graph

tannin chemical compound

concept · 6 mentions

A type of compound that may or may not be present in coffee

Other senses of “tannin”

unspecified

Connections

The concepts, people, and places this entity is most linked to by claims — node size is mention count, colour is type, dashed nodes are other senses of the same word.

tannintannin (—)coffee — 1 shared claimroasted coffee — 1 shared claimraw coffee — 1 shared claimcoffeeroasted coffeeraw coffee
Concept

Defining properties

Perspectives

Claims grouped by the voice that makes them.

Tatlock and Thompson

  • roasted coffee contains no tannin
    assertsneutralsource: coffee-pg28500
    roasted coffee contains no tannin
    judge verdicts (2)
    • groundedness 1.00 pass — The claim is directly stated in the passage. The text explicitly states: 'Tatlock and Thompson[130] have expressed the opinion that roasted coffee contains no tannin,' which matches the claim exactly.
    • qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly attributed to Tatlock and Thompson, who are explicitly named in the passage. The stance 'asserts' matches the passage's framing ('expressed the opinion'). The sentiment is neutral, appropriate for a factual claim. The time qualifiers are appropriately null since the passage provides no temporal specifications. The context is empty, which is correct as the passage does not restrict the claim to a particular sense or role. The quote 'roasted coffee contains no tannin' appears verbatim in the passage and directly supports the claim.
  • raw coffee contains tannin ⟨precipitable by gelatin or alkaloids⟩
    assertsneutralsource: coffee-pg28500
    They found only 4.5 percent of tannin (precipitable by gelatin or alkaloids) in raw coffee
    judge verdicts (2)
    • groundedness 1.00 pass — The claim is directly stated in the passage. The text explicitly quotes Tatlock and Thompson as finding 'only 4.5 percent of tannin (precipitable by gelatin or alkaloids) in raw coffee,' which directly supports the subject-predicate-object relationship that raw coffee contains tannin, with the specified context of precipitation method.
    • qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint correctly attributes the claim to 'Tatlock and Thompson' as named in the passage. The stance 'asserts' appropriately reflects that they 'expressed the opinion' and 'found' the tannin content. The sentiment is neutral, matching the objective reporting of a measurement. The time qualifiers are correctly null, as the passage provides no temporal information. The context accurately reflects the passage's specification '(precipitable by gelatin or alkaloids)'. The quote is verbatim and directly supports the claim that raw coffee contains tannin at this concentration level under these specific conditions.

William H. Ukers (author)

  • tannin exists in coffee coffee ⟨in the true sense of the term⟩
    disputesneutralsource: coffee-pg28500
    there is no tannin, in the true sense of the term, in coffee
    judge verdicts (2)
    • groundedness 1.00 pass — The claim is directly stated in the passage. The author explicitly concludes: 'there is no tannin, in the true sense of the term, in coffee' and further states that constituents designated as tannin 'are physiologically harmless,' directly supporting the claim that tannin does not exist in coffee in the true sense.
    • qualifier_fidelity 0.90 pass — The claim is largely faithful to the passage. The quote is verbatim and the context qualifier ('in the true sense of the term') accurately reflects the passage's restriction. However, there is a minor issue with 'viewpoint': the passage attributes the consolidation of 'these statements by eminent authorities' to the author/passage itself rather than attributing it to a single named source. The use of 'author' as viewpoint is acceptable here since the claim reflects the passage's own conclusion, not an external named source. All other qualifiers (stance 'disputes', sentiment 'neutral', time 'null', context 'in the true sense of the term') are faithful to the passage.