CREATE TABLE table_61512 ("Date" TEXT, "Opponent" TEXT, "Site" TEXT, "Result" TEXT, "Attendance" TEXT)

What Site has Attendance of 53,000, and a Date of october 21, 1967?
SELECT "Site" FROM table_61512 WHERE "Attendance" = '53,000' AND "Date" = 'october 21, 1967'
SELECT "Site" FROM "table_61512" WHERE "Attendance" = '53,000' AND "Date" = 'october 21, 1967'