It is probably the case that Brian is a swan. It is highly unlikely that John went to the kitchen. Chances are about even that Emily is a mouse. It is unlikely that if John went to the kitchen, or Emily is a mouse, then Jason is bored. It is certain that if Emily is a mouse, or John went to the kitchen, then Bernhard is gray. Chances are slight that if Emily is a mouse, and John went to the kitchen, then Daniel got the milk.
It is highly unlikely that either Daniel got the milk, or John went to the kitchen.
It is highly unlikely that either Daniel got the milk, or John went to the kitchen.
There is a better than even chance that either Daniel got the milk, or John went to the kitchen.
Either Daniel got the milk, or John went to the kitchen.