context: There is a better than even chance that Lily is a swan. It is probably not the case that Brian is gray. It is impossible that John went to the hallway. It is probably the case that if Lily is a swan, or Brian is gray, then Bernhard is a lion. It is probably not the case that if either Brian is gray, or Lily is a swan, then Bill is in the school. There is a better than even chance that if John went to the hallway, or Lily is a swan, then Julius is a frog.
hypothesis: Chances are about even that either Bernhard is a lion, or Bill is in the school.
valid_hypothesis: Chances are about even that either Bernhard is a lion, or Bill is in the school.
invalid_hypothesis: There is almost no chance that either Bernhard is a lion, or Bill is in the school.
hypothesis_assertion: Either Bernhard is a lion, or Bill is in the school.