An Unflattened Identity and Change Knowledge Graph

caffeine chemical

concept · 4 mentions

A chemical compound found in coffee and other plants

Other senses of “caffeine”

unspecified alkaloid chemical constituent chemical_compound compound substance

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.

caffeinecaffeine (—)caffeine (alkaloid)caffeine (chemical constituent)caffeine (chemical_compound)caffeine (compound)caffeine (substance)coffee (beverage) — 1 shared claimdog — 1 shared claimrabbit — 1 shared claimtheobromine — 1 shared claimcoffee (beverage)dograbbittheobromine
ConceptPerson

Defining properties

Perspectives

Claims grouped by the voice that makes them.

bibliographic record

  • caffeine undergoes metabolic breakdown in dog 1899 ⟨organism⟩
    KRUeGER, MARTIN. Ueber den Abbau des Caffeins im Organismus des Hundes.
    judge verdicts (2)
    • groundedness 1.00 pass — The claim is directly stated in the passage. The bibliographic entry for Krueger explicitly mentions 'Ueber den Abbau des Caffeins im Organismus des Hundes' (On the breakdown of caffeine in the organism of the dog), published in 1899, which directly supports the claim that caffeine undergoes metabolic breakdown in dogs.
    • qualifier_fidelity 0.85 pass — The claim is largely faithful to the passage. The quote appears verbatim and accurately reflects the bibliographic entry. Viewpoint, stance, and sentiment are all appropriate for a bibliographic record. Time qualifiers correctly match the 1899 publication date. Context 'organism' appropriately reflects 'Organismus' from the source title. One minor issue: the viewpoint should be 'author' (KRUEGER, MARTIN) rather than generic 'bibliographic record' since the passage attributes the work to a named source. The claim should specify the author viewpoint to be fully precise.
  • caffeine undergoes metabolic breakdown in rabbit 1899 ⟨organism⟩
    Ueber den Abbau des Caffeins im Organismus des Kaninchens.
    judge verdicts (2)
    • groundedness 1.00 pass — The claim is directly stated in the passage. The bibliographic entry for Krueger's work explicitly mentions 'Ueber den Abbau des Caffeins im Organismus des Kaninchens' (On the breakdown of caffeine in the organism of the rabbit), published in 1899, which directly supports the claim that caffeine undergoes metabolic breakdown in rabbits.
    • qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint 'bibliographic record' appropriately reflects that this is a citation entry rather than a named source making the claim. The stance 'asserts' matches the declarative nature of the German title. The sentiment 'neutral' is appropriate for a scientific bibliographic entry. The time '1899' matches the publication date given in the passage (Berichte der deutschen chemischen Gesellschaft, 1899, XXXII, No. 488). The context 'organism' appropriately reflects 'Organismus des Kaninchens' (organism of the rabbit) from the passage. The quote is verbatim from the passage and directly supports the claim about caffeine breakdown in rabbits.
  • caffeine studied alongside theobromine 1883
    MALY, RICHARD, and ANDREASCH, RUDOLF. Studien ueber Caffein und Theobromin.
    judge verdicts (2)
    • groundedness 1.00 pass — The claim is directly supported by the passage. The bibliographic entry for MALY and ANDREASCH clearly shows a study titled 'Studien ueber Caffein und Theobromin' (Studies on Caffeine and Theobromine) published in 1883, confirming that caffeine and theobromine were studied together in that year.
    • qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly identified as 'bibliographic record' rather than attributing it to a named source as author. The stance 'asserts' appropriately reflects the straightforward presentation. Sentiment is neutral, matching the factual nature of a bibliographic citation. The time qualifier correctly specifies 1883, matching the publication year in the passage. Context is empty, which is appropriate as no specific sense or role restriction is given. The quote appears verbatim in the passage and accurately supports the claim that caffeine was studied alongside theobromine.

Aubert

  • caffeine is contained in coffee beverage
    Coffeingehalt des Kaffeegetraenkes
    judge verdicts (4)
    • groundedness 1.00 pass — The claim is directly stated in the passage. The citation by Aubert, H. from 1872 includes the title 'Ueber den Coffeingehalt des Kaffeegetraenkes und ueber die Wirkungen des Coffeins' which directly references 'Coffeingehalt des Kaffeegetraenkes' (caffeine content of coffee beverage), fully supporting the subject-predicate-object relationship.
    • qualifier_fidelity 0.50 fail — Multiple qualifier issues: (1) VIEWPOINT: The claim attributes the statement to 'author' but the passage shows this is from AUBERT, H., a named source - the viewpoint should be 'Aubert' not 'author'. (2) TIME: The claim specifies valid_from and valid_to as '1872' but the passage gives no temporal scope for when caffeine is contained in coffee - these should be null, matching the 'when' field. The quote 'Coffeingehalt des Kaffeegetraenkes' appears in Aubert's 1872 publication but establishes no date restriction on the claim itself.
    • groundedness 1.00 pass — The claim is directly stated in the passage. Aubert's work is cited with the title 'Ueber den Coffeingehalt des Kaffeegetraenkes und ueber die Wirkungen des Coffeins' (On the caffeine content of coffee beverage and on the effects of caffeine), which explicitly confirms that caffeine is contained in coffee beverage.
    • qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint correctly attributes the claim to Aubert (from the journal article listing). The stance 'asserts' is appropriate as the passage presents this as a factual research finding without disputation. The sentiment 'neutral' matches the objective, scientific framing. The time qualifiers are correctly null since the passage provides no specific temporal scope for when this relationship holds. The context is appropriately empty as the passage does not restrict the claim to a particular sense or role. The quote 'Coffeingehalt des Kaffeegetraenkes' (caffeine content of the coffee beverage) appears verbatim in the passage and directly supports the claim that caffeine is contained in coffee beverage.

Change over time

1883
  • studied alongside theobromine
1899
  • undergoes metabolic breakdown in dog
  • undergoes metabolic breakdown in rabbit

Disagreements

undergoes metabolic breakdown in …
  • dog asserts bibliographic record
  • rabbit asserts bibliographic record