It is highly likely that Brian is a swan. We doubt that John moved to the office. It is improbable that Winona is a wolf. It is likely that if John moved to the office, and Brian is a swan, then Bernhard is gray. It is impossible that if either John moved to the office, or Winona is a wolf, then Mary went to the bedroom. It is improbable that if Winona is a wolf, or Brian is a swan, then Greg is gray.
There is little chance that either Greg is gray, or Mary went to the bedroom.
There is little chance that either Greg is gray, or Mary went to the bedroom.
There is a better than even chance that either Greg is gray, or Mary went to the bedroom.
Either Greg is gray, or Mary went to the bedroom.