CREATE TABLE table_18901 ("Rnd" FLOAT, "Circuit" CLOB, "GTO Winning Team" CLOB, "GTU Winning Team" CLOB, "TO Winning Team" CLOB, "TU Winning Team" CLOB, "Results" CLOB)

What round was the gto winning team #48 greenwood racing?
SELECT "Rnd" FROM table_18901 WHERE "GTO Winning Team" = '#48 Greenwood Racing'
SELECT "Rnd" FROM "table_18901" WHERE "GTO Winning Team" = '#48 Greenwood Racing'