context: It is unlikely that Bill went to the hallway. It is improbable that Mary left the football. It is unlikely that Julius is a swan.
hypothesis: It is probable that either Julius is a swan, or Bill went to the hallway.
valid_hypothesis: It is probably not the case that either Julius is a swan, or Bill went to the hallway.
invalid_hypothesis: It is probable that either Julius is a swan, or Bill went to the hallway.
hypothesis_assertion: Either Julius is a swan, or Bill went to the hallway.