William H. Ukers (author)
- coffee sample is treated with alcohol 80-percent alcohol by volume 16 hours ⟨total acidity determination⟩
Treat 10 grams of the sample, prepared as directed under 4, with 75 cc. of 80-percent alcohol by volume in an Erlenmeyer flask, stopper, and allow to stand 16 hours
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly and fully supported by the passage. The exact procedure for total acidity determination explicitly states: 'Treat 10 grams of the sample...with 75 cc. of 80-percent alcohol by volume in an Erlenmeyer flask...and allow to stand 16 hours,' which perfectly matches the claim's subject, predicate, object, and timeframe.
- qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly attributed to the author (procedural instructions). The stance is accurately 'asserts' (directive form). Sentiment is appropriately neutral for technical procedure. The time qualifier 'when: 16 hours' correctly captures the standing duration. The context 'total acidity determination' matches section 20 where this procedure appears. The quote is verbatim and directly supports the claim about treating the coffee sample with 80-percent alcohol by volume.
distil until the distillate is no longer acid to litmus paper
judge verdicts (2)
- groundedness 1.00 pass — The passage explicitly describes the volatile acidity method (section 21) which involves distilling a coffee sample until the distillate is no longer acid to litmus paper, then titrating the distillate. The claim accurately captures that distillation is the core analytical technique used for volatile acidity determination.
- qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint 'author' is appropriate as the passage presents these as standard analytical procedures without attribution to a named source. The stance 'asserts' correctly reflects the prescriptive nature of the method. The sentiment 'neutral' matches the technical, procedural tone. Time qualifiers are correctly null as no temporal information is provided. The context 'volatile acidity determination' accurately reflects the passage's section 21 heading. The quote appears verbatim in the passage and directly supports the claim about the distillation method used in volatile acidity analysis.
If a sample shows six black beans, or equivalent imperfections, it is graded as No. 2
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage: 'If a sample shows six black beans, or equivalent imperfections, it is graded as No. 2.' The context of one-pound samples is also explicitly mentioned earlier in the passage.
- qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly attributed to the author (the passage presents the grading scale factually without attribution to a named source). The stance is appropriately 'asserts' as the passage states this as fact. The sentiment is neutral, matching the passage's objective tone. The time qualifiers are correctly null as the passage provides no temporal scope. The context 'in one-pound samples' is accurate and directly supported by the passage's statement 'The test is made on one-pound samples.' The quote appears verbatim and directly supports the claim.
if thirteen black beans, as No. 3
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage: 'If a sample shows six black beans, or equivalent imperfections, it is graded as No. 2; if thirteen black beans, as No. 3.' The passage explicitly confirms that a coffee sample with thirteen black beans is graded as No. 3.
- qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly attributed to the author (no named source is provided in the passage). The stance is 'asserts' which matches the factual presentation in the passage. The sentiment is neutral, appropriate for a technical classification description. The time qualifiers are correctly null as the passage provides no temporal scope. The context correctly specifies 'one-pound samples' as stated in the passage. The quote 'if thirteen black beans, as No. 3' appears verbatim and directly supports the claim about the grading standard.
if twenty-nine black beans, as No. 4
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage: 'If a sample shows six black beans, or equivalent imperfections, it is graded as No. 2; if thirteen black beans, as No. 3; if twenty-nine black beans, as No. 4...' The subject, predicate, and object all match exactly what is written.
- qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint 'author' is appropriate as the passage presents a classification system without attributing it to a named source. The stance 'asserts' correctly reflects the declarative nature of the grading criteria. The sentiment 'neutral' matches the factual, technical tone. The time is correctly null as the passage provides no temporal scope. The context 'in one-pound samples' accurately reflects the passage's specification that 'The test is made on one-pound samples.' The quote 'if twenty-nine black beans, as No. 4' appears verbatim and directly supports the claim about the grading threshold.
if sixty black beans, as No. 5
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly and explicitly stated in the passage: 'if sixty black beans, as No. 5' appears verbatim when describing the grading scale for one-pound coffee samples. No rewording or inference is required.
- qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly attributed to the author (the passage presents this as an objective classification system). The stance is appropriately 'asserts' as the passage states this definitively. Sentiment is neutral, matching the technical, matter-of-fact tone of the passage. The time qualifiers are correctly null since the passage provides no temporal scope. The context 'in one-pound samples' accurately reflects the passage's specification that 'The test is made on one-pound samples.' The quote 'if sixty black beans, as No. 5' appears verbatim in the passage and directly supports the claim. All qualifier requirements are met.
if one hundred and ten black beans, as No. 6
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage: 'if one hundred and ten black beans, as No. 6' explicitly establishes that a one-pound coffee sample showing one hundred and ten black beans is graded as No. 6.
- qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly attributed to the author (the passage itself establishes this grading system). The stance 'asserts' appropriately reflects how the passage presents this information. The sentiment is neutral, matching the technical, non-evaluative tone. The time qualifiers are appropriately null as the passage provides no temporal information. The context correctly specifies 'in one-pound samples,' which the passage explicitly states ('The test is made on one-pound samples'). The quote is verbatim from the passage and directly supports the claim about the No. 6 grading threshold.
- coffee sample graded as no. 7 or no. 8 when showing more than one hundred and ten black beans ⟨in one-pound samples⟩
if more than one hundred and ten black beans, as No. 7 or No. 8
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage: 'if more than one hundred and ten black beans, as No. 7 or No. 8.' The passage explicitly establishes this grading threshold for one-pound coffee samples.
- qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly attributed to the author (the passage describes a classification system without naming a specific source). The stance of 'asserts' is appropriate as the passage states this as fact. Sentiment is neutral, matching the technical, objective tone. Time qualifiers are correctly null as the passage provides no temporal information. The context accurately specifies 'one-pound samples' as stated in the passage. The quote is verbatim from the passage and directly supports the claim about the grading criteria.