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_17 (no_built VARCHAR, loco_nos VARCHAR)
### Question:
How many were built with a locomotive number of 11-20?
### Answer:
SELECT no_built FROM table_name_17 WHERE loco_nos = "11-20"