context: There is little chance that Greg is green. It is improbable that John went to the hallway. Chances are slight that Brian is yellow.
hypothesis: There is almost no chance that john went to the hallway, and Greg is green.
valid_hypothesis: There is almost no chance that john went to the hallway, and Greg is green.
invalid_hypothesis: It is certain that john went to the hallway, and Greg is green.
hypothesis_assertion: John went to the hallway, and Greg is green.