What is the 1993 value with a 1r in 1991 and sf in 1990?
CREATE TABLE table_name_75 (Id VARCHAR)
SELECT 1993 FROM table_name_75 WHERE 1991 = "1r" AND 1990 = "sf"
### Context: CREATE TABLE table_name_75 (Id VARCHAR) ### Question: What is the 1993 value with a 1r in 1991 and sf in 1990? ### Answer: SELECT 1993 FROM table_name_75 WHERE 1991 = "1r" AND 1990 = "sf"