context: We believe that Sandra grabbed the milk. It is highly likely that Greg is yellow. It is impossible that Fred is in the kitchen. There is little chance that if Sandra grabbed the milk, or Greg is yellow, then Bill went to the hallway. It is probably the case that if Greg is yellow, or Fred is in the kitchen, then Bernhard is a lion. It is improbable that if either Fred is in the kitchen, or Sandra grabbed the milk, then Brian is white.
hypothesis: It is improbable that bill went to the hallway, and Greg is yellow.
valid_hypothesis: It is improbable that bill went to the hallway, and Greg is yellow.
invalid_hypothesis: It is likely that bill went to the hallway, and Greg is yellow.
hypothesis_assertion: Bill went to the hallway, and Greg is yellow.