Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_56 (population INTEGER, country VARCHAR, urban_area VARCHAR)
### Question:
what is the population of Valencia, Spain?
### Answer:
SELECT AVG(population) FROM table_name_56 WHERE country = "spain" AND urban_area = "valencia"