context: A bald, white man, talks with an old, black man, on a bench.
hypothesis: There is almost no chance that the two old men on the bench were talking about chess.
valid_hypothesis: There is almost no chance that the two old men on the bench were talking about chess.
invalid_hypothesis: It is likely that the two old men on the bench were talking about chess.
hypothesis_assertion: The two old men on the bench were talking about chess.