Who won the womens singles when Marc Zwiebler won the men's singles?
CREATE TABLE table_12121208_1 (womens_singles VARCHAR, mens_singles VARCHAR)
SELECT womens_singles FROM table_12121208_1 WHERE mens_singles = "Marc Zwiebler"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_12121208_1 (womens_singles VARCHAR, mens_singles VARCHAR) Question: Who won the womens singles when Marc Zwiebler won the men's singles? [/INST] SELECT womens_singles FROM table_12121208_1 WHERE mens_singles = "Marc Zwiebler" </s>