context: It is highly likely that Brian is yellow. It is probable that Mary dropped the milk. It is impossible that John moved to the office. There is little chance that if either Brian is yellow, or John moved to the office, then Daniel left the football. There is a very good chance that if either John moved to the office, or Mary dropped the milk, then Fred went to the kitchen. It is probably the case that if Mary dropped the milk, and Brian is yellow, then Jessica is a cat.
hypothesis: We believe that either Fred went to the kitchen, or Jessica is a cat.
valid_hypothesis: It is probably not the case that either Fred went to the kitchen, or Jessica is a cat.
invalid_hypothesis: We believe that either Fred went to the kitchen, or Jessica is a cat.
hypothesis_assertion: Either Fred went to the kitchen, or Jessica is a cat.