context: It is unlikely that Sandra took the apple. We believe that Daniel got the football. It is highly unlikely that Bernhard is a frog. There is almost no chance that if Daniel got the football, or Sandra took the apple, then Greg is a lion. It is almost certain that if Bernhard is a frog, and Sandra took the apple, then John went to the hallway. It is almost certain that if either Sandra took the apple, or Bernhard is a frog, then Lily is a swan.
hypothesis: It is impossible that lily is a swan, and John went to the hallway.
valid_hypothesis: It is impossible that lily is a swan, and John went to the hallway.
invalid_hypothesis: There is a better than even chance that lily is a swan, and John went to the hallway.
hypothesis_assertion: Lily is a swan, and John went to the hallway.