context: It is improbable that Mary went to the office. It is probably not the case that John got the apple. It is likely that Brian is yellow.
hypothesis: We believe that john got the apple, and Brian is yellow.
valid_hypothesis: We doubt that john got the apple, and Brian is yellow.
invalid_hypothesis: We believe that john got the apple, and Brian is yellow.
hypothesis_assertion: John got the apple, and Brian is yellow.