context: There is almost no chance that John went to the hallway. Chances are about even that Greg is a lion. It is improbable that Daniel got the football.
hypothesis: It is highly unlikely that daniel got the football, and Greg is a lion.
valid_hypothesis: It is highly unlikely that daniel got the football, and Greg is a lion.
invalid_hypothesis: It is certain that daniel got the football, and Greg is a lion.
hypothesis_assertion: Daniel got the football, and Greg is a lion.