How many performers are 29 that made it to the semi finals?
CREATE TABLE table_28180840_15 (semifinal__week_ VARCHAR, age_s_ VARCHAR)
SELECT semifinal__week_ FROM table_28180840_15 WHERE age_s_ = "29"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_28180840_15 (semifinal__week_ VARCHAR, age_s_ VARCHAR) Question: How many performers are 29 that made it to the semi finals? [/INST] SELECT semifinal__week_ FROM table_28180840_15 WHERE age_s_ = "29" </s>