What type of surface did the tournament canada f9, markham have?
CREATE TABLE table_name_30 (surface VARCHAR, tournament VARCHAR)
SELECT surface FROM table_name_30 WHERE tournament = "canada f9, markham"
### Context: CREATE TABLE table_name_30 (surface VARCHAR, tournament VARCHAR) ### Question: What type of surface did the tournament canada f9, markham have? ### Answer: SELECT surface FROM table_name_30 WHERE tournament = "canada f9, markham"