context: There is a very good chance that Brian is a frog. There is almost no chance that Sandra left the apple. It is improbable that Bernhard is a lion. It is probably not the case that if either Brian is a frog, or Bernhard is a lion, then Julius is a rhino. It is probably the case that if either Bernhard is a lion, or Sandra left the apple, then Lily is a swan. It is highly likely that if Bernhard is a lion, or Brian is a frog, then Fred went to the hallway.
hypothesis: It is highly unlikely that lily is a swan, and Fred went to the hallway.
valid_hypothesis: It is highly unlikely that lily is a swan, and Fred went to the hallway.
invalid_hypothesis: It is certain that lily is a swan, and Fred went to the hallway.
hypothesis_assertion: Lily is a swan, and Fred went to the hallway.