user: ### NOW ANSWER:
Question: WHICH 1990 has a 1993 of 1R?
Columns: ['Tournament', '1988', '1989', '1990', '1991', '1992', '1993', '1994', '1995', '1996', '1997', '1998']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Grand Slam Tournaments', 'Grand Slam Tournaments', 'Grand Slam Tournaments', 'Grand Slam Tournaments', 'Grand Slam Tournaments', 'Grand Slam Tournaments', 'Grand Slam Tournaments', 'Grand Slam Tournaments', 'Grand Slam Tournaments', 'Grand Slam Tournaments', 'Grand Slam Tournaments', 'Grand Slam Tournaments']
SQL:

assistant: SELECT "1990" FROM "Table" WHERE "1993" = '1R';