context: It is highly likely that Mary moved to the office. There is little chance that Brian is a lion. It is certain that Fred left the milk. There is almost no chance that if Brian is a lion, or Mary moved to the office, then Winona is a mouse. There is a better than even chance that if Brian is a lion, or Fred left the milk, then Greg is white. It is highly likely that if Fred left the milk, and Brian is a lion, then John went to the kitchen.
hypothesis: Chances are slight that fred left the milk, or Brian is a lion.
valid_hypothesis: It is certain that fred left the milk, or Brian is a lion.
invalid_hypothesis: Chances are slight that fred left the milk, or Brian is a lion.
hypothesis_assertion: Fred left the milk, or Brian is a lion.