what is the surface when the opponent is selma babic?
CREATE TABLE table_name_31 (surface VARCHAR, opponent VARCHAR)
SELECT surface FROM table_name_31 WHERE opponent = "selma babic"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_31 (surface VARCHAR, opponent VARCHAR) Question: what is the surface when the opponent is selma babic? [/INST] SELECT surface FROM table_name_31 WHERE opponent = "selma babic" </s>