What were the sets when Federer had 6 and a nadal of 13?
CREATE TABLE table_name_95 (sets VARCHAR, nadal VARCHAR, federer VARCHAR)
SELECT sets FROM table_name_95 WHERE nadal = 13 AND federer = 6
### Context: CREATE TABLE table_name_95 (sets VARCHAR, nadal VARCHAR, federer VARCHAR) ### Question: What were the sets when Federer had 6 and a nadal of 13? ### Answer: SELECT sets FROM table_name_95 WHERE nadal = 13 AND federer = 6