Name the surface for cara black rennae stubbs
CREATE TABLE table_23944006_4 (surface VARCHAR, opponents VARCHAR)
SELECT surface FROM table_23944006_4 WHERE opponents = "Cara Black Rennae Stubbs"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_23944006_4 (surface VARCHAR, opponents VARCHAR) Question: Name the surface for cara black rennae stubbs [/INST] SELECT surface FROM table_23944006_4 WHERE opponents = "Cara Black Rennae Stubbs" </s>