context: There is almost no chance that Brian is gray. We believe that Mary went to the kitchen. It is highly likely that Julius is yellow.
hypothesis: It is certain that mary went to the kitchen, and Brian is gray.
valid_hypothesis: There is almost no chance that mary went to the kitchen, and Brian is gray.
invalid_hypothesis: It is certain that mary went to the kitchen, and Brian is gray.
hypothesis_assertion: Mary went to the kitchen, and Brian is gray.