context: Chances are about even that Greg is yellow. It is highly likely that Winona is a wolf. It is certain that Mary went to the garden. There is a better than even chance that if Winona is a wolf, or Mary went to the garden, then Bernhard is a lion. It is highly unlikely that if either Greg is yellow, or Winona is a wolf, then Julius is white. There is a very good chance that if Greg is yellow, and Winona is a wolf, then Lily is a swan.
hypothesis: Chances are about even that either Greg is yellow, or Julius is white.
valid_hypothesis: Chances are about even that either Greg is yellow, or Julius is white.
invalid_hypothesis: It is certain that either Greg is yellow, or Julius is white.
hypothesis_assertion: Either Greg is yellow, or Julius is white.