What is the oldest year that the location was at Guangzhou?
CREATE TABLE table_name_1 (year INTEGER, location VARCHAR)
SELECT MIN(year) FROM table_name_1 WHERE location = "guangzhou"
### Context: CREATE TABLE table_name_1 (year INTEGER, location VARCHAR) ### Question: What is the oldest year that the location was at Guangzhou? ### Answer: SELECT MIN(year) FROM table_name_1 WHERE location = "guangzhou"