context: It is unlikely that John went to the kitchen. It is highly unlikely that Sandra grabbed the milk. It is likely that Mary moved to the garden. It is probably not the case that if John went to the kitchen, or Sandra grabbed the milk, then Bernhard is a lion. There is little chance that if Sandra grabbed the milk, or Mary moved to the garden, then Brian is a rhino. It is probably not the case that if either John went to the kitchen, or Mary moved to the garden, then Lily is green.
hypothesis: Chances are about even that brian is a rhino, and Sandra grabbed the milk.
valid_hypothesis: It is impossible that brian is a rhino, and Sandra grabbed the milk.
invalid_hypothesis: Chances are about even that brian is a rhino, and Sandra grabbed the milk.
hypothesis_assertion: Brian is a rhino, and Sandra grabbed the milk.