author
Beginning at around 4000 BC they were selectively bred from the native Saccharum robustum
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage: 'Beginning at around 4000 BC they were selectively bred from the native Saccharum robustum.' The subject, predicate, object, and timeframe all match the source text exactly without requiring outside knowledge or over-generalization.
- qualifier_fidelity 0.90 pass — The claim is largely faithful to the passage. Viewpoint is correctly set to 'author' (the passage presents this as factual history rather than attribution to a named source). Stance and sentiment are appropriate. Time qualifier matches the passage's "around 4000 BC" with valid_from="-4000" and valid_to=null. Context is empty, which is appropriate since the passage does not restrict this to a specific sense. The quote is verbatim and supports the claim. Minor note: The passage says "they were selectively bred from" referring to S. officinarum being bred from S. robustum, which the claim captures correctly, though the pronoun reference requires reading context. Overall, all qualifiers are faithful.