context: There is a better than even chance that Mary is in the bedroom. It is highly unlikely that Jeff went to the kitchen. There is little chance that Brian is gray. Chances are about even that if Brian is gray, and Jeff went to the kitchen, then Sandra grabbed the milk. Chances are about even that if Jeff went to the kitchen, and Mary is in the bedroom, then Greg is a lion. There is almost no chance that if Jeff went to the kitchen, and Mary is in the bedroom, then Julius is a rhino.
hypothesis: We believe that brian is gray, and Julius is a rhino.
valid_hypothesis: It is impossible that brian is gray, and Julius is a rhino.
invalid_hypothesis: We believe that brian is gray, and Julius is a rhino.
hypothesis_assertion: Brian is gray, and Julius is a rhino.