context: It is highly unlikely that Julius is a frog. Chances are slight that Yann is tired. There is little chance that Brian is a lion. There is almost no chance that if Yann is tired, or Brian is a lion, then Winona is a cat. There is little chance that if Brian is a lion, or Julius is a frog, then Fred went to the hallway. It is probably the case that if either Yann is tired, or Julius is a frog, then Mary picked up the milk.
hypothesis: It is improbable that julius is a frog, or Mary picked up the milk.
valid_hypothesis: It is improbable that julius is a frog, or Mary picked up the milk.
invalid_hypothesis: It is highly likely that julius is a frog, or Mary picked up the milk.
hypothesis_assertion: Julius is a frog, or Mary picked up the milk.