context: There is little chance that Bill went to the hallway. It is highly unlikely that Daniel left the milk. It is probable that Brian is a swan.
hypothesis: It is probably not the case that brian is a swan, or Bill went to the hallway.
valid_hypothesis: We believe that brian is a swan, or Bill went to the hallway.
invalid_hypothesis: It is probably not the case that brian is a swan, or Bill went to the hallway.
hypothesis_assertion: Brian is a swan, or Bill went to the hallway.