Compare long-document strategies

Locate-then-extract is three pieces: a cheap locator that returns candidate pages per field, an extractor that sees only those pages (with their original page numbers, so quotes still verify), and merge rules that combine per-group results without silently choosing between conflicting values. The decision that matters most is the merge rule for rent. The long lease contains a second, non-operative rent clause in a form of underlease. A strategy that picks one rent clause can pick the wrong one with full confidence. A strategy that keeps both and flags the overlap hands the choice to a person.