What is the surface of the French Championships?
CREATE TABLE table_2215159_2 (surface VARCHAR, championship VARCHAR)
SELECT surface FROM table_2215159_2 WHERE championship = "French championships"
### Context: CREATE TABLE table_2215159_2 (surface VARCHAR, championship VARCHAR) ### Question: What is the surface of the French Championships? ### Answer: SELECT surface FROM table_2215159_2 WHERE championship = "French championships"