context: It is impossible that Greg is a swan. It is impossible that Bernhard is gray. It is impossible that Daniel got the football. It is unlikely that if Greg is a swan, and Daniel got the football, then Lily is yellow. Chances are slight that if either Daniel got the football, or Bernhard is gray, then Mary left the milk. There is little chance that if Bernhard is gray, or Daniel got the football, then Julius is a rhino.
hypothesis: It is impossible that lily is yellow, or Daniel got the football.
valid_hypothesis: It is impossible that lily is yellow, or Daniel got the football.
invalid_hypothesis: It is likely that lily is yellow, or Daniel got the football.
hypothesis_assertion: Lily is yellow, or Daniel got the football.