It is certain that Emily is a wolf. It is probably not the case that Mary picked up the milk. Chances are slight that Greg is yellow. It is improbable that if Greg is yellow, and Emily is a wolf, then Brian is gray. It is impossible that if Greg is yellow, and Emily is a wolf, then John moved to the office. It is probably not the case that if either Emily is a wolf, or Mary picked up the milk, then Jeff discarded the apple.
It is impossible that jeff discarded the apple, and Brian is gray.
It is impossible that jeff discarded the apple, and Brian is gray.
Chances are about even that jeff discarded the apple, and Brian is gray.
Jeff discarded the apple, and Brian is gray.