context: It is probably not the case that John went to the garden. It is impossible that Emily is a wolf. It is impossible that Lily is gray. We doubt that if Lily is gray, and Emily is a wolf, then Greg is gray. It is certain that if Emily is a wolf, and Lily is gray, then Mary dropped the milk. It is probably the case that if Emily is a wolf, or John went to the garden, then Julius is white.
hypothesis: It is impossible that either Lily is gray, or Greg is gray.
valid_hypothesis: It is impossible that either Lily is gray, or Greg is gray.
invalid_hypothesis: We believe that either Lily is gray, or Greg is gray.
hypothesis_assertion: Either Lily is gray, or Greg is gray.