context: It is highly likely that Brian is yellow. It is certain that Sandra left the football. It is highly likely that Bernhard is green.
hypothesis: It is improbable that brian is yellow, and Sandra left the football.
valid_hypothesis: It is highly likely that brian is yellow, and Sandra left the football.
invalid_hypothesis: It is improbable that brian is yellow, and Sandra left the football.
hypothesis_assertion: Brian is yellow, and Sandra left the football.