context: We doubt that Mary got the milk. It is almost certain that Fred went to the hallway. It is highly likely that Julius is a frog. Chances are slight that if either Julius is a frog, or Mary got the milk, then Jessica is a mouse. There is a very good chance that if Mary got the milk, or Julius is a frog, then Winona is a cat. It is highly unlikely that if Fred went to the hallway, or Mary got the milk, then Brian is a swan.
hypothesis: It is probably not the case that either Mary got the milk, or Jessica is a mouse.
valid_hypothesis: It is probably not the case that either Mary got the milk, or Jessica is a mouse.
invalid_hypothesis: It is certain that either Mary got the milk, or Jessica is a mouse.
hypothesis_assertion: Either Mary got the milk, or Jessica is a mouse.