context: It is impossible that Brian is a lion. It is probably not the case that Bernhard is yellow. It is probable that Mary went to the office.
hypothesis: It is unlikely that mary went to the office, and Bernhard is yellow.
valid_hypothesis: It is unlikely that mary went to the office, and Bernhard is yellow.
invalid_hypothesis: It is certain that mary went to the office, and Bernhard is yellow.
hypothesis_assertion: Mary went to the office, and Bernhard is yellow.