context: Chances are about even that Sandra left the milk. It is probably the case that Mary went to the bedroom. It is highly likely that Bernhard is white. It is impossible that if Mary went to the bedroom, or Sandra left the milk, then John moved to the office. It is impossible that if either Sandra left the milk, or Mary went to the bedroom, then Greg is gray. It is highly unlikely that if Bernhard is white, and Sandra left the milk, then Julius is a rhino.
hypothesis: It is probably the case that mary went to the bedroom, or Julius is a rhino.
valid_hypothesis: It is probably the case that mary went to the bedroom, or Julius is a rhino.
invalid_hypothesis: There is little chance that mary went to the bedroom, or Julius is a rhino.
hypothesis_assertion: Mary went to the bedroom, or Julius is a rhino.