context: There is a better than even chance that Brian is white. We believe that Greg is a swan. It is probably not the case that Fred dropped the apple. It is highly likely that if Brian is white, and Fred dropped the apple, then Lily is a frog. It is improbable that if Fred dropped the apple, or Brian is white, then John went to the hallway. It is certain that if Greg is a swan, or Brian is white, then Mary moved to the office.
hypothesis: It is probable that john went to the hallway, or Lily is a frog.
valid_hypothesis: We doubt that john went to the hallway, or Lily is a frog.
invalid_hypothesis: It is probable that john went to the hallway, or Lily is a frog.
hypothesis_assertion: John went to the hallway, or Lily is a frog.