context: Chances are about even that Brian is green. It is impossible that Greg is gray. It is highly unlikely that Bernhard is a lion.
hypothesis: It is almost certain that greg is gray, and Bernhard is a lion.
valid_hypothesis: It is impossible that greg is gray, and Bernhard is a lion.
invalid_hypothesis: It is almost certain that greg is gray, and Bernhard is a lion.
hypothesis_assertion: Greg is gray, and Bernhard is a lion.