context: Chances are about even that Lily is gray. We doubt that Mary took the football. It is highly likely that Brian is a frog.
hypothesis: Chances are about even that either Lily is gray, or Brian is a frog.
valid_hypothesis: Chances are about even that either Lily is gray, or Brian is a frog.
invalid_hypothesis: It is impossible that either Lily is gray, or Brian is a frog.
hypothesis_assertion: Either Lily is gray, or Brian is a frog.