Finds a model's quote in the source text and returns its character range there (ANS-3).
Tolerates what text extraction legitimately changes — runs of whitespace, line breaks,
and words hyphenated across a line — and nothing else. Wording, punctuation and case
must match, because a quote that differs in those was not copied, and a highlight built
from it would point at text that does not say what the answer claims.
Finds a model's quote in the source text and returns its character range there (ANS-3).
Tolerates what text extraction legitimately changes — runs of whitespace, line breaks, and words hyphenated across a line — and nothing else. Wording, punctuation and case must match, because a quote that differs in those was not copied, and a highlight built from it would point at text that does not say what the answer claims.