Why not overlapping sizes? (1), (1,2), (1,2,3) Sometimes the match is in a single sentence. Sometimes in the full paragraph. Sometimes across two paragraphs. If

Why not overlapping sizes? (1), (1,2), (1,2,3) Sometimes the match is in a single sentence. Sometimes in the full paragraph. Sometimes across two paragraphs. If, in your top n results, some of these items overlap, you use the greater unit. And you slide these windows. Also, I wouldn’t necessarily use a “sentence” as the lower bound, since that can be something like “Yes.”