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_37 (district INTEGER, party VARCHAR, home_town VARCHAR)
### Question:
What district has a democratic leader from Roby?
### Answer:
SELECT SUM(district) FROM table_name_37 WHERE party = "democratic" AND home_town = "roby"