context: There is almost no chance that Brian is gray. It is impossible that Greg is yellow. There is a better than even chance that Mary moved to the garden.
hypothesis: It is almost certain that greg is yellow, and Brian is gray.
valid_hypothesis: It is impossible that greg is yellow, and Brian is gray.
invalid_hypothesis: It is almost certain that greg is yellow, and Brian is gray.
hypothesis_assertion: Greg is yellow, and Brian is gray.