context: It is probable that Greg is yellow. Chances are about even that John dropped the apple. It is probably the case that Lily is yellow.
hypothesis: Chances are about even that either Lily is yellow, or John dropped the apple.
valid_hypothesis: Chances are about even that either Lily is yellow, or John dropped the apple.
invalid_hypothesis: It is impossible that either Lily is yellow, or John dropped the apple.
hypothesis_assertion: Either Lily is yellow, or John dropped the apple.