It is improbable that Bill went to the office. It is probable that Brian is green. There is little chance that Bernhard is a swan. We doubt that if either Bernhard is a swan, or Brian is green, then Sandra got the apple. It is certain that if Bernhard is a swan, or Brian is green, then Greg is yellow. It is highly unlikely that if either Bernhard is a swan, or Brian is green, then Lily is yellow.
It is unlikely that either Brian is green, or Lily is yellow.
It is likely that either Brian is green, or Lily is yellow.
It is unlikely that either Brian is green, or Lily is yellow.
Either Brian is green, or Lily is yellow.