context: It is unlikely that Daniel dropped the milk. Chances are slight that Greg is a lion. It is certain that Mary went to the kitchen.
hypothesis: It is certain that mary went to the kitchen, or Greg is a lion.
valid_hypothesis: It is certain that mary went to the kitchen, or Greg is a lion.
invalid_hypothesis: It is probably not the case that mary went to the kitchen, or Greg is a lion.
hypothesis_assertion: Mary went to the kitchen, or Greg is a lion.