context: It is certain that John got the milk. We believe that Julius is a swan. It is improbable that Jeff went to the hallway.
hypothesis: It is probable that either Julius is a swan, or Jeff went to the hallway.
valid_hypothesis: It is probable that either Julius is a swan, or Jeff went to the hallway.
invalid_hypothesis: It is unlikely that either Julius is a swan, or Jeff went to the hallway.
hypothesis_assertion: Either Julius is a swan, or Jeff went to the hallway.