context: There is a better than even chance that Mary moved to the office. It is likely that Sandra left the football. Chances are about even that Brian is gray. Chances are slight that if Brian is gray, or Mary moved to the office, then Fred went to the garden. There is almost no chance that if Sandra left the football, and Brian is gray, then Julius is a lion. It is unlikely that if Brian is gray, or Sandra left the football, then Bernhard is gray.
hypothesis: It is highly likely that fred went to the garden, and Bernhard is gray.
valid_hypothesis: There is almost no chance that fred went to the garden, and Bernhard is gray.
invalid_hypothesis: It is highly likely that fred went to the garden, and Bernhard is gray.
hypothesis_assertion: Fred went to the garden, and Bernhard is gray.