Name the number of womens doubles for 2011 rio de janeiro
CREATE TABLE table_28138035_4 (womens_doubles VARCHAR, year_location VARCHAR)
SELECT COUNT(womens_doubles) FROM table_28138035_4 WHERE year_location = "2011 Rio de Janeiro"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_28138035_4 (womens_doubles VARCHAR, year_location VARCHAR) Question: Name the number of womens doubles for 2011 rio de janeiro [/INST] SELECT COUNT(womens_doubles) FROM table_28138035_4 WHERE year_location = "2011 Rio de Janeiro" </s>