context: It is probable that Julius is yellow. It is impossible that Greg is gray. It is impossible that John moved to the garden. It is improbable that if Julius is yellow, or Greg is gray, then Sandra left the milk. There is a better than even chance that if either Julius is yellow, or Greg is gray, then Mary put down the apple. We doubt that if either Julius is yellow, or Greg is gray, then Bernhard is a lion.
hypothesis: It is probable that julius is yellow, and Greg is gray.
valid_hypothesis: It is impossible that julius is yellow, and Greg is gray.
invalid_hypothesis: It is probable that julius is yellow, and Greg is gray.
hypothesis_assertion: Julius is yellow, and Greg is gray.