context: There is a better than even chance that Greg is a lion. Chances are slight that Mary left the milk. There is little chance that Brian is a rhino.
hypothesis: It is unlikely that mary left the milk, or Brian is a rhino.
valid_hypothesis: It is unlikely that mary left the milk, or Brian is a rhino.
invalid_hypothesis: It is probable that mary left the milk, or Brian is a rhino.
hypothesis_assertion: Mary left the milk, or Brian is a rhino.