Which nation had a battlecruiser with an estimate of 513?
CREATE TABLE table_name_39 (nat VARCHAR, ship_type VARCHAR, estimate VARCHAR)
SELECT nat FROM table_name_39 WHERE ship_type = "battlecruiser" AND estimate = "513"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_39 (nat VARCHAR, ship_type VARCHAR, estimate VARCHAR) Question: Which nation had a battlecruiser with an estimate of 513? [/INST] SELECT nat FROM table_name_39 WHERE ship_type = "battlecruiser" AND estimate = "513" </s>