context: It is improbable that Greg is gray. We doubt that John discarded the apple. It is improbable that Brian is green.
hypothesis: It is probably not the case that either Brian is green, or John discarded the apple.
valid_hypothesis: It is probably not the case that either Brian is green, or John discarded the apple.
invalid_hypothesis: It is probably the case that either Brian is green, or John discarded the apple.
hypothesis_assertion: Either Brian is green, or John discarded the apple.