context: It is almost certain that Fred left the football. It is highly unlikely that Bernhard is gray. It is probably not the case that John went to the hallway. There is a very good chance that if Bernhard is gray, or Fred left the football, then Bill moved to the office. Chances are slight that if either Fred left the football, or John went to the hallway, then Greg is a swan. It is probably not the case that if John went to the hallway, or Fred left the football, then Brian is a frog.
hypothesis: It is almost certain that john went to the hallway, or Fred left the football.
valid_hypothesis: It is almost certain that john went to the hallway, or Fred left the football.
invalid_hypothesis: It is probably not the case that john went to the hallway, or Fred left the football.
hypothesis_assertion: John went to the hallway, or Fred left the football.