CREATE TABLE table_56730 ("Edition" FLOAT, "Zone" CLOB, "Round" CLOB, "Date" CLOB, "Against" CLOB, "Surface" CLOB, "Partner" CLOB, "Opponents" CLOB, "Result" CLOB)

Which zone had m d lina gojnea monica niculescu as the opponent?
SELECT "Zone" FROM table_56730 WHERE "Opponents" = 'mădălina gojnea monica niculescu'
SELECT "Zone" FROM "table_56730" WHERE "Opponents" = 'mădălina gojnea monica niculescu'