context: Chances are about even that Mary is in the school. It is highly unlikely that Lily is white. It is highly likely that Greg is yellow. We believe that if either Lily is white, or Mary is in the school, then Brian is a frog. It is unlikely that if either Mary is in the school, or Lily is white, then John left the football. There is almost no chance that if Greg is yellow, or Lily is white, then Bernhard is gray.
hypothesis: There is almost no chance that mary is in the school, and Lily is white.
valid_hypothesis: There is almost no chance that mary is in the school, and Lily is white.
invalid_hypothesis: There is a very good chance that mary is in the school, and Lily is white.
hypothesis_assertion: Mary is in the school, and Lily is white.