context: There is a very good chance that Greg is gray. There is little chance that Brian is green. We believe that Mary is in the hallway.
hypothesis: It is likely that brian is green, and Greg is gray.
valid_hypothesis: Chances are slight that brian is green, and Greg is gray.
invalid_hypothesis: It is likely that brian is green, and Greg is gray.
hypothesis_assertion: Brian is green, and Greg is gray.