context: It is probable that Brian is gray. It is unlikely that Bernhard is a lion. It is likely that John got the football. It is improbable that if either John got the football, or Bernhard is a lion, then Fred went to the hallway. It is highly likely that if either Brian is gray, or John got the football, then Greg is a swan. There is almost no chance that if Bernhard is a lion, or Brian is gray, then Julius is white.
hypothesis: It is unlikely that either Brian is gray, or Fred went to the hallway.
valid_hypothesis: It is probably the case that either Brian is gray, or Fred went to the hallway.
invalid_hypothesis: It is unlikely that either Brian is gray, or Fred went to the hallway.
hypothesis_assertion: Either Brian is gray, or Fred went to the hallway.