It is probable that Brian is a rhino. It is highly unlikely that Mary dropped the milk. There is almost no chance that Sandra left the milk. There is a very good chance that if Mary dropped the milk, or Brian is a rhino, then Emily is a cat. It is highly unlikely that if Sandra left the milk, and Mary dropped the milk, then Greg is green. There is almost no chance that if Brian is a rhino, or Sandra left the milk, then John picked up the apple.
We believe that sandra left the milk, or John picked up the apple.
There is almost no chance that sandra left the milk, or John picked up the apple.
We believe that sandra left the milk, or John picked up the apple.
Sandra left the milk, or John picked up the apple.