Which year opened is located in west mifflin, pennsylvania?
CREATE TABLE table_name_50 (year_opened VARCHAR, location VARCHAR)
SELECT year_opened FROM table_name_50 WHERE location = "west mifflin, pennsylvania"
### Context: CREATE TABLE table_name_50 (year_opened VARCHAR, location VARCHAR) ### Question: Which year opened is located in west mifflin, pennsylvania? ### Answer: SELECT year_opened FROM table_name_50 WHERE location = "west mifflin, pennsylvania"