context: It is almost certain that Sandra got the apple. It is impossible that Bill went to the hallway. It is highly unlikely that Brian is gray. There is a better than even chance that if Brian is gray, or Bill went to the hallway, then Mary moved to the office. It is likely that if either Sandra got the apple, or Brian is gray, then Julius is a lion. It is highly likely that if Bill went to the hallway, and Brian is gray, then Bernhard is gray.
hypothesis: It is probable that either Julius is a lion, or Brian is gray.
valid_hypothesis: It is probable that either Julius is a lion, or Brian is gray.
invalid_hypothesis: We doubt that either Julius is a lion, or Brian is gray.
hypothesis_assertion: Either Julius is a lion, or Brian is gray.