We believe that Fred went to the hallway. There is little chance that Brian is a swan. There is a better than even chance that Lily is a frog. It is highly unlikely that if Lily is a frog, or Brian is a swan, then Mary moved to the office. It is improbable that if Fred went to the hallway, and Lily is a frog, then John put down the milk. It is highly likely that if either Fred went to the hallway, or Lily is a frog, then Greg is white.
Chances are about even that either Greg is white, or Mary moved to the office.
Chances are about even that either Greg is white, or Mary moved to the office.
It is highly unlikely that either Greg is white, or Mary moved to the office.
Either Greg is white, or Mary moved to the office.