The next sentence: ¿Qué edificio es este, por favor?
The taxi is driving down into a valley and you ask the driver about a building. In front of it stands an advertising board with a fat elephant on it (e) carrying a foundling on its back; the child is sitting on a sieve as round as an O (dificio).
The child is eating something (es), and there are branches lying next to it (este). If you want to be polite, add por favor.