CREATE TABLE table_204_570 (id DECIMAL, "rank" DECIMAL, "mountain" TEXT, "height  ( m ) " DECIMAL, "height  ( ft ) " DECIMAL, "range" TEXT, "coordinates" TEXT, "prominence  ( m ) " DECIMAL, "parent mountain" TEXT, "first ascent" DECIMAL, "ascents  ( failed attempts )  bef.2004" TEXT)

how many total failed attempts occurred at makalu and cho oyu ?
SELECT SUM("ascents (failed attempts) bef.2004") FROM table_204_570 WHERE "mountain" IN ('makalu', 'cho oyu')
SELECT SUM("ascents (failed attempts) bef.2004") FROM "table_204_570" WHERE "mountain" IN ('makalu', 'cho oyu')