context: It is impossible that Daniel took the football. There is a very good chance that Mary went to the office. It is almost certain that Brian is a lion. There is a better than even chance that if Daniel took the football, and Mary went to the office, then Greg is gray. We doubt that if Brian is a lion, and Daniel took the football, then Julius is white. It is probably the case that if Brian is a lion, or Daniel took the football, then Lily is a rhino.
hypothesis: It is highly unlikely that either Brian is a lion, or Julius is white.
valid_hypothesis: It is almost certain that either Brian is a lion, or Julius is white.
invalid_hypothesis: It is highly unlikely that either Brian is a lion, or Julius is white.
hypothesis_assertion: Either Brian is a lion, or Julius is white.