context: There is a better than even chance that Daniel left the milk. There is a very good chance that Greg is a lion. We believe that John went to the kitchen.
hypothesis: It is certain that daniel left the milk, and John went to the kitchen.
valid_hypothesis: Chances are about even that daniel left the milk, and John went to the kitchen.
invalid_hypothesis: It is certain that daniel left the milk, and John went to the kitchen.
hypothesis_assertion: Daniel left the milk, and John went to the kitchen.