We doubt that Mary went to the garden. It is likely that Julius is a swan. It is probable that Emily is a sheep.
There is a better than even chance that either Julius is a swan, or Mary went to the garden.
There is a better than even chance that either Julius is a swan, or Mary went to the garden.
It is highly unlikely that either Julius is a swan, or Mary went to the garden.
Either Julius is a swan, or Mary went to the garden.