It is probable that John went to the hallway. It is probable that Mary picked up the apple. It is almost certain that Lily is a frog. It is improbable that if either John went to the hallway, or Lily is a frog, then Sandra left the apple. It is highly likely that if either Lily is a frog, or John went to the hallway, then Fred moved to the office. There is almost no chance that if Lily is a frog, or John went to the hallway, then Brian is gray.
It is probable that either John went to the hallway, or Brian is gray.
It is probable that either John went to the hallway, or Brian is gray.
It is unlikely that either John went to the hallway, or Brian is gray.
Either John went to the hallway, or Brian is gray.