context: It is improbable that Greg is white. Chances are about even that Lily is yellow. It is unlikely that Brian is green. It is highly likely that if Brian is green, or Lily is yellow, then John went to the garden. There is almost no chance that if Lily is yellow, or Brian is green, then Julius is a lion. We doubt that if Brian is green, and Greg is white, then Mary discarded the apple.
hypothesis: It is highly unlikely that lily is yellow, and Greg is white.
valid_hypothesis: It is highly unlikely that lily is yellow, and Greg is white.
invalid_hypothesis: Chances are about even that lily is yellow, and Greg is white.
hypothesis_assertion: Lily is yellow, and Greg is white.