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_23840623_4 (epa_rated_combined_fuel_economy VARCHAR, vehicle VARCHAR)
### Question:
What is the epa rated combined fuel economy for the Nissan Leaf?
### Answer:
SELECT epa_rated_combined_fuel_economy FROM table_23840623_4 WHERE vehicle = "Nissan Leaf"