Read the following passage and answer the questions

Nam's grandparents live in a nice, small house in the countryside. There isn't a school, a bookshop, a hotel, a hospital, a restaurant near it but there is a long river. There is a rice paddy behind the house. There is a rice paddy in front of it, too. To the left of the house is a small market. To the right of the house is a big garden. His grandparents grow a lot of vegetables and flowers in the garden. He loves them and their house very much. It is quiet and peaceful. He visits it every summer.

What is behind the house?