context: There is a better than even chance that Mary went to the hallway. We believe that Bill is in the school. It is probably not the case that Brian is green. We doubt that if Bill is in the school, and Mary went to the hallway, then Daniel left the football. It is impossible that if either Brian is green, or Bill is in the school, then Greg is a swan. It is probably the case that if Mary went to the hallway, and Brian is green, then Bernhard is gray.
hypothesis: Chances are slight that either Bernhard is gray, or Greg is a swan.
valid_hypothesis: Chances are slight that either Bernhard is gray, or Greg is a swan.
invalid_hypothesis: It is likely that either Bernhard is gray, or Greg is a swan.
hypothesis_assertion: Either Bernhard is gray, or Greg is a swan.