context: Chances are about even that Mary grabbed the milk. Chances are slight that Antoine is thirsty. There is a better than even chance that Jessica is a cat. It is almost certain that if either Mary grabbed the milk, or Antoine is thirsty, then Greg is a rhino. There is little chance that if either Mary grabbed the milk, or Jessica is a cat, then Emily is a sheep. It is highly unlikely that if Mary grabbed the milk, or Jessica is a cat, then John got the football.
hypothesis: Chances are about even that greg is a rhino, and Mary grabbed the milk.
valid_hypothesis: Chances are about even that greg is a rhino, and Mary grabbed the milk.
invalid_hypothesis: It is highly unlikely that greg is a rhino, and Mary grabbed the milk.
hypothesis_assertion: Greg is a rhino, and Mary grabbed the milk.