user: Question: Which 1997's AccompAnying 1991 wAs A when the tournAment wAs the Australian Open?
Columns: ['Tournament', '1989', '1990', '1991', '1992', '1993', '1994', '1995', '1996', '1997', 'Career W–L']
Types: ['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']
SQL:

assistant: SELECT "1997" FROM "Table" WHERE "1991" = 'A' AND "Tournament" = 'Australian Open';