user: Question: What is the 1977 value that had Grand Slam Tournaments in 1972?
Columns: ['Tournament', '1972', '1973', '1974', '1975', '1976', '1977', '1978']
Types: ['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']
SQL:

assistant: SELECT "1977" FROM "Table" WHERE "1972" = 'Grand Slam Tournaments';