The fly the spider caught

This is an extreme example of centre embedding which I came up with many years ago. It’s a synopsis of the children’s rhyme, There Was an Old Woman Who Swallowed a Fly.

The fly
    the spider
        the bird
            the cat
                the dog
                    the goat
                        the cow
                            the horse
                            caught
                        caught
                    caught
                caught
            caught
        caught
    caught
led to the old woman’s death.