It is unlikely that Greg is a frog. It is highly unlikely that Brian is gray. It is impossible that Bernhard is green. Chances are slight that if Brian is gray, or Greg is a frog, then Emily is a wolf. It is almost certain that if Bernhard is green, or Greg is a frog, then Bill went to the kitchen. There is almost no chance that if Bernhard is green, and Greg is a frog, then Sandra dropped the milk.
We doubt that either Bill went to the kitchen, or Sandra dropped the milk.
We doubt that either Bill went to the kitchen, or Sandra dropped the milk.
It is probably the case that either Bill went to the kitchen, or Sandra dropped the milk.
Either Bill went to the kitchen, or Sandra dropped the milk.