context: It is probable that Julius is a rhino. It is likely that Brian is a frog. We doubt that Mary moved to the garden. It is highly unlikely that if Julius is a rhino, or Mary moved to the garden, then Daniel left the milk. It is probably not the case that if either Julius is a rhino, or Brian is a frog, then Lily is a lion. Chances are about even that if either Mary moved to the garden, or Julius is a rhino, then John went to the kitchen.
hypothesis: It is probably not the case that either Lily is a lion, or John went to the kitchen.
valid_hypothesis: It is probably not the case that either Lily is a lion, or John went to the kitchen.
invalid_hypothesis: There is a very good chance that either Lily is a lion, or John went to the kitchen.
hypothesis_assertion: Either Lily is a lion, or John went to the kitchen.