context: It is highly likely that Lily is a swan. It is likely that Greg is a lion. It is likely that Julius is yellow. There is little chance that if Greg is a lion, and Lily is a swan, then Fred dropped the apple. It is highly likely that if Greg is a lion, or Julius is yellow, then Mary went to the garden. There is almost no chance that if Greg is a lion, or Julius is yellow, then Bernhard is a frog.
hypothesis: There is a very good chance that fred dropped the apple, or Mary went to the garden.
valid_hypothesis: There is a very good chance that fred dropped the apple, or Mary went to the garden.
invalid_hypothesis: It is probably not the case that fred dropped the apple, or Mary went to the garden.
hypothesis_assertion: Fred dropped the apple, or Mary went to the garden.