context: There is a very good chance that Greg is white. We believe that Brian is gray. It is impossible that Mary grabbed the milk.
hypothesis: It is improbable that either Mary grabbed the milk, or Brian is gray.
valid_hypothesis: We believe that either Mary grabbed the milk, or Brian is gray.
invalid_hypothesis: It is improbable that either Mary grabbed the milk, or Brian is gray.
hypothesis_assertion: Either Mary grabbed the milk, or Brian is gray.