It is probable that Greg is a rhino. It is highly likely that John went to the bedroom. It is impossible that Mary moved to the office. It is unlikely that if John went to the bedroom, or Greg is a rhino, then Jessica is a cat. It is improbable that if either Greg is a rhino, or Mary moved to the office, then Brian is a swan. There is almost no chance that if either John went to the bedroom, or Mary moved to the office, then Bernhard is gray.
It is improbable that either Bernhard is gray, or Brian is a swan.
It is improbable that either Bernhard is gray, or Brian is a swan.
It is certain that either Bernhard is gray, or Brian is a swan.
Either Bernhard is gray, or Brian is a swan.