CREATE TABLE table_42501 ("Date" CLOB, "at/vs." CLOB, "Opponent'" CLOB, "Score'" CLOB, "Attendance" FLOAT, "Record" CLOB)

How many were in Attendance on February 21, 1988 against the New Jersey Saints?
SELECT SUM("Attendance") FROM table_42501 WHERE "Opponent'" = 'new jersey saints' AND "Date" = 'february 21, 1988'
SELECT SUM("Attendance") FROM "table_42501" WHERE "Date" = 'february 21, 1988' AND "Opponent'" = 'new jersey saints'