user: Question: What 1973 has a 1978 of 75%?
Columns: ['Tournament', '1973', '1974', '1975', '1976', '1977', '1978', '1979', '1983', '1984', '1985', '1986']
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 "1973" FROM "Table" WHERE "1978" = '75%';