context: It is improbable that Brian is green. It is probably the case that Bernhard is a frog. It is certain that Fred is in the school. There is a very good chance that if either Fred is in the school, or Bernhard is a frog, then Julius is white. There is a better than even chance that if Fred is in the school, and Bernhard is a frog, then John went to the bedroom. Chances are about even that if either Bernhard is a frog, or Fred is in the school, then Lily is yellow.
hypothesis: It is probable that either Lily is yellow, or Julius is white.
valid_hypothesis: It is improbable that either Lily is yellow, or Julius is white.
invalid_hypothesis: It is probable that either Lily is yellow, or Julius is white.
hypothesis_assertion: Either Lily is yellow, or Julius is white.