CREATE TABLE table_16740 ("Rnd" FLOAT, "Race" CLOB, "Date" CLOB, "Location" CLOB, "Pole Position" CLOB, "Fastest Lap" CLOB, "Race Winner" CLOB, "Constructor" CLOB, "Report" CLOB)

What was the constructor for round 15?
SELECT "Constructor" FROM table_16740 WHERE "Rnd" = '15'
SELECT "Constructor" FROM "table_16740" WHERE "Rnd" = '15'