context: There is a better than even chance that Mary went to the kitchen. It is highly likely that Bernhard is green. We believe that Brian is a lion.
hypothesis: It is certain that either Brian is a lion, or Mary went to the kitchen.
valid_hypothesis: Chances are about even that either Brian is a lion, or Mary went to the kitchen.
invalid_hypothesis: It is certain that either Brian is a lion, or Mary went to the kitchen.
hypothesis_assertion: Either Brian is a lion, or Mary went to the kitchen.