context: It is highly likely that Bill went to the garden. It is unlikely that Brian is a lion. Chances are about even that Lily is a frog.
hypothesis: Chances are about even that lily is a frog, and Bill went to the garden.
valid_hypothesis: Chances are about even that lily is a frog, and Bill went to the garden.
invalid_hypothesis: It is impossible that lily is a frog, and Bill went to the garden.
hypothesis_assertion: Lily is a frog, and Bill went to the garden.