context: Chances are about even that Bernhard is white. It is certain that Mary is in the cinema. There is a very good chance that Sandra left the football. Chances are slight that if Mary is in the cinema, or Bernhard is white, then Greg is gray. It is probably not the case that if Mary is in the cinema, or Sandra left the football, then John discarded the milk. It is highly unlikely that if Mary is in the cinema, or Sandra left the football, then Brian is a rhino.
hypothesis: There is little chance that greg is gray, and Mary is in the cinema.
valid_hypothesis: There is little chance that greg is gray, and Mary is in the cinema.
invalid_hypothesis: It is almost certain that greg is gray, and Mary is in the cinema.
hypothesis_assertion: Greg is gray, and Mary is in the cinema.