context: It is almost certain that John left the football. It is probably the case that Greg is yellow. There is a very good chance that Winona is a wolf. It is almost certain that if either John left the football, or Winona is a wolf, then Lily is a swan. It is probable that if either John left the football, or Winona is a wolf, then Bernhard is green. Chances are slight that if Winona is a wolf, and John left the football, then Fred is in the kitchen.
hypothesis: It is probably not the case that either Greg is yellow, or John left the football.
valid_hypothesis: It is probably not the case that either Greg is yellow, or John left the football.
invalid_hypothesis: It is probable that either Greg is yellow, or John left the football.
hypothesis_assertion: Either Greg is yellow, or John left the football.