context: It is probable that Daniel left the football. We believe that Lily is a rhino. It is likely that Fred moved to the office.
hypothesis: It is highly unlikely that either Lily is a rhino, or Daniel left the football.
valid_hypothesis: Chances are about even that either Lily is a rhino, or Daniel left the football.
invalid_hypothesis: It is highly unlikely that either Lily is a rhino, or Daniel left the football.
hypothesis_assertion: Either Lily is a rhino, or Daniel left the football.