What is the tournament with a hard surface and Ruben de Kleijn as the opponent?
CREATE TABLE table_name_64 (tournament VARCHAR, surface VARCHAR, opponent VARCHAR)
SELECT tournament FROM table_name_64 WHERE surface = "hard" AND opponent = "ruben de kleijn"
### Context: CREATE TABLE table_name_64 (tournament VARCHAR, surface VARCHAR, opponent VARCHAR) ### Question: What is the tournament with a hard surface and Ruben de Kleijn as the opponent? ### Answer: SELECT tournament FROM table_name_64 WHERE surface = "hard" AND opponent = "ruben de kleijn"