What is Surface, when Tournament is "Sunderland , United Kingdom"?
CREATE TABLE table_name_4 (surface VARCHAR, tournament VARCHAR)
SELECT surface FROM table_name_4 WHERE tournament = "sunderland , united kingdom"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_4 (surface VARCHAR, tournament VARCHAR) Question: What is Surface, when Tournament is "Sunderland , United Kingdom"? [/INST] SELECT surface FROM table_name_4 WHERE tournament = "sunderland , united kingdom" </s>