context: It is probably not the case that Sandra took the milk. There is a better than even chance that Brian is gray. It is improbable that Greg is yellow. It is highly unlikely that if Brian is gray, and Sandra took the milk, then Bernhard is white. It is improbable that if Greg is yellow, or Brian is gray, then Julius is a rhino. It is unlikely that if Brian is gray, and Greg is yellow, then John went to the garden.
hypothesis: It is impossible that sandra took the milk, and John went to the garden.
valid_hypothesis: It is impossible that sandra took the milk, and John went to the garden.
invalid_hypothesis: There is a better than even chance that sandra took the milk, and John went to the garden.
hypothesis_assertion: Sandra took the milk, and John went to the garden.