I sell you the key of the king's garden.

I sell you the key of the king's garden.
I sell you the string that ties the key of the king's garden.
I sell you the rat that gnawed the st‡ung that ties the key of the king's garden.
I sell you the cat that caught the rat that gnawed the string that ties the key of the king's garden.
I sell you the dog that bit the cat that caught the rat that gnawed the string that ties the key of the king's garden.