context: It is certain that John is in the garden. We believe that Greg is gray. There is little chance that Brian is a lion.
hypothesis: We believe that john is in the garden, and Greg is gray.
valid_hypothesis: We believe that john is in the garden, and Greg is gray.
invalid_hypothesis: There is little chance that john is in the garden, and Greg is gray.
hypothesis_assertion: John is in the garden, and Greg is gray.