context: We believe that Lily is a lion. It is highly unlikely that Brian is green. We doubt that John went to the garden. It is highly likely that if Lily is a lion, and Brian is green, then Julius is gray. Chances are slight that if either Brian is green, or John went to the garden, then Sandra dropped the milk. Chances are about even that if Brian is green, and John went to the garden, then Greg is a frog.
hypothesis: We believe that lily is a lion, or Greg is a frog.
valid_hypothesis: We believe that lily is a lion, or Greg is a frog.
invalid_hypothesis: It is probably not the case that lily is a lion, or Greg is a frog.
hypothesis_assertion: Lily is a lion, or Greg is a frog.