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_72 (capacity__mw_ INTEGER, state_province VARCHAR)
### Question:
What is the total capacity (MW) of the windfarm located in the state/province of Gansu?
### Answer:
SELECT SUM(capacity__mw_) FROM table_name_72 WHERE state_province = "gansu"