context: It is highly likely that Mary dropped the apple. We believe that Bill put down the milk. It is certain that Julius is white.
hypothesis: It is impossible that bill put down the milk, or Julius is white.
valid_hypothesis: It is certain that bill put down the milk, or Julius is white.
invalid_hypothesis: It is impossible that bill put down the milk, or Julius is white.
hypothesis_assertion: Bill put down the milk, or Julius is white.