CREATE TABLE table_12542 ("Tournament" CLOB, "1973" CLOB, "1974" CLOB, "1975" CLOB, "1976" CLOB, "1977" CLOB, "1978" CLOB, "1979" CLOB, "1983" CLOB, "1984" CLOB, "1985" CLOB, "1986" CLOB)

What 1976 has a 1978 of grand slam tournaments?
SELECT "1976" FROM table_12542 WHERE "1978" = 'grand slam tournaments'
SELECT "1976" FROM "table_12542" WHERE "1978" = 'grand slam tournaments'