user: Question: What 1984 has a 1978 of 46–15?
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 "1984" FROM "Table" WHERE "1978" = '46–15';