How many semi-final weeks are there for acts from Pittsburgh, Pennsylvania?
CREATE TABLE table_27529608_21 (semi_final__week_ VARCHAR, hometown VARCHAR)
SELECT COUNT(semi_final__week_) FROM table_27529608_21 WHERE hometown = "Pittsburgh, Pennsylvania"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_27529608_21 (semi_final__week_ VARCHAR, hometown VARCHAR) Question: How many semi-final weeks are there for acts from Pittsburgh, Pennsylvania? [/INST] SELECT COUNT(semi_final__week_) FROM table_27529608_21 WHERE hometown = "Pittsburgh, Pennsylvania" </s>