context: There is a very good chance that Mary went to the kitchen. Chances are about even that Greg is a frog. It is unlikely that Julius is yellow. We doubt that if Julius is yellow, and Mary went to the kitchen, then Emily is a cat. It is probably not the case that if either Mary went to the kitchen, or Greg is a frog, then Brian is green. We believe that if either Mary went to the kitchen, or Julius is yellow, then Sandra took the milk.
hypothesis: There is a very good chance that mary went to the kitchen, or Sandra took the milk.
valid_hypothesis: There is a very good chance that mary went to the kitchen, or Sandra took the milk.
invalid_hypothesis: We doubt that mary went to the kitchen, or Sandra took the milk.
hypothesis_assertion: Mary went to the kitchen, or Sandra took the milk.