context: It is unlikely that John went to the hallway. There is a better than even chance that Greg is yellow. We doubt that Brian is a swan.
hypothesis: It is highly likely that greg is yellow, and Brian is a swan.
valid_hypothesis: It is improbable that greg is yellow, and Brian is a swan.
invalid_hypothesis: It is highly likely that greg is yellow, and Brian is a swan.
hypothesis_assertion: Greg is yellow, and Brian is a swan.