context: It is probable that Lily is gray. It is impossible that Brian is a frog. It is unlikely that Mary went to the office.
hypothesis: Chances are slight that lily is gray, and Mary went to the office.
valid_hypothesis: Chances are slight that lily is gray, and Mary went to the office.
invalid_hypothesis: It is almost certain that lily is gray, and Mary went to the office.
hypothesis_assertion: Lily is gray, and Mary went to the office.