CREATE TABLE table_13657883_2 (rnd VARCHAR2, gto_winning_team VARCHAR2)

What round was the gto winning team #48 greenwood racing?
SELECT rnd FROM table_13657883_2 WHERE gto_winning_team = "#48 Greenwood Racing"
SELECT "rnd" FROM "table_13657883_2" WHERE "#48 Greenwood Racing" = "gto_winning_team"