context: It is probably not the case that Fred is in the kitchen. It is highly unlikely that Sandra took the football. It is highly likely that Mary got the milk. We doubt that if either Fred is in the kitchen, or Mary got the milk, then Bernhard is yellow. It is impossible that if Mary got the milk, or Sandra took the football, then Brian is a frog. It is probable that if Sandra took the football, or Fred is in the kitchen, then Greg is a rhino.
hypothesis: It is highly unlikely that sandra took the football, and Mary got the milk.
valid_hypothesis: It is highly unlikely that sandra took the football, and Mary got the milk.
invalid_hypothesis: It is certain that sandra took the football, and Mary got the milk.
hypothesis_assertion: Sandra took the football, and Mary got the milk.