context: It is probable that Julius is a lion. Chances are slight that John dropped the apple. It is certain that Bill put down the milk.
hypothesis: It is certain that bill put down the milk, or Julius is a lion.
valid_hypothesis: It is certain that bill put down the milk, or Julius is a lion.
invalid_hypothesis: It is highly unlikely that bill put down the milk, or Julius is a lion.
hypothesis_assertion: Bill put down the milk, or Julius is a lion.