context: There is a very good chance that Daniel left the football. It is probable that Julius is a rhino. It is certain that Brian is a lion. It is certain that if Daniel left the football, or Julius is a rhino, then Greg is green. Chances are about even that if either Julius is a rhino, or Daniel left the football, then John went to the hallway. It is impossible that if Brian is a lion, or Julius is a rhino, then Sandra got the milk.
hypothesis: It is highly unlikely that either Greg is green, or Brian is a lion.
valid_hypothesis: It is highly unlikely that either Greg is green, or Brian is a lion.
invalid_hypothesis: We believe that either Greg is green, or Brian is a lion.
hypothesis_assertion: Either Greg is green, or Brian is a lion.