context: It is probably the case that Brian is gray. There is little chance that Greg is a swan. It is improbable that Mary went to the hallway.
hypothesis: It is highly unlikely that brian is gray, or Mary went to the hallway.
valid_hypothesis: We believe that brian is gray, or Mary went to the hallway.
invalid_hypothesis: It is highly unlikely that brian is gray, or Mary went to the hallway.
hypothesis_assertion: Brian is gray, or Mary went to the hallway.