context: There is little chance that John went to the bedroom. It is probably the case that Brian is a lion. It is unlikely that Greg is a swan. Chances are about even that if Brian is a lion, and Greg is a swan, then Julius is gray. There is almost no chance that if either Greg is a swan, or Brian is a lion, then Sandra grabbed the milk. It is impossible that if either John went to the bedroom, or Brian is a lion, then Bernhard is a frog.
hypothesis: There is almost no chance that greg is a swan, and John went to the bedroom.
valid_hypothesis: There is almost no chance that greg is a swan, and John went to the bedroom.
invalid_hypothesis: There is a very good chance that greg is a swan, and John went to the bedroom.
hypothesis_assertion: Greg is a swan, and John went to the bedroom.