It is certain that Fred discarded the milk. We doubt that Bernhard is yellow. It is unlikely that Greg is a rhino. There is a very good chance that if Fred discarded the milk, and Greg is a rhino, then Lily is a frog. It is probably the case that if Fred discarded the milk, or Greg is a rhino, then Sandra left the football. It is almost certain that if either Fred discarded the milk, or Bernhard is yellow, then Julius is white.
It is certain that either Bernhard is yellow, or Greg is a rhino.
It is probably not the case that either Bernhard is yellow, or Greg is a rhino.
It is certain that either Bernhard is yellow, or Greg is a rhino.
Either Bernhard is yellow, or Greg is a rhino.