context: It is probably not the case that Julius is a frog. We believe that Mary dropped the milk. It is unlikely that Lily is a rhino. It is highly likely that if Lily is a rhino, or Julius is a frog, then Winona is a wolf. Chances are about even that if either Julius is a frog, or Mary dropped the milk, then Bernhard is a lion. There is a very good chance that if either Lily is a rhino, or Julius is a frog, then John picked up the apple.
hypothesis: There is a better than even chance that either Mary dropped the milk, or Julius is a frog.
valid_hypothesis: There is a better than even chance that either Mary dropped the milk, or Julius is a frog.
invalid_hypothesis: It is highly unlikely that either Mary dropped the milk, or Julius is a frog.
hypothesis_assertion: Either Mary dropped the milk, or Julius is a frog.