Arnold Lobel's Key of the kingdom

This is the key of the kingdom. 

In that kingdom, there is a city.

In that city there is a town

In that town there is a street

In that street there is a lane

In that lane there is a yard

In that yard there is a house

In that house there is a room

In that room there is a bed.

On that bed there is a basket.

In the basket there are some flowers.

Flowers in the basket;

Basket on the bed;

Bed in the room;

Room in the house;

House in the yard;

Yard in the lane;

Lane in the street;

Street in the town,

Town in the city;

City in the kingdom--

This is the key to the kingdom.