context: It is impossible that Greg is gray. Chances are slight that Mary moved to the office. There is a better than even chance that Bill went to the kitchen.
hypothesis: Chances are slight that either Greg is gray, or Mary moved to the office.
valid_hypothesis: Chances are slight that either Greg is gray, or Mary moved to the office.
invalid_hypothesis: It is certain that either Greg is gray, or Mary moved to the office.
hypothesis_assertion: Either Greg is gray, or Mary moved to the office.