context: It is probable that Greg is gray. Chances are slight that John grabbed the milk. It is probably the case that Lily is a frog.
hypothesis: It is likely that either Lily is a frog, or John grabbed the milk.
valid_hypothesis: It is likely that either Lily is a frog, or John grabbed the milk.
invalid_hypothesis: It is impossible that either Lily is a frog, or John grabbed the milk.
hypothesis_assertion: Either Lily is a frog, or John grabbed the milk.