CREATE TABLE table_25223 ("Rnd" FLOAT, "Date" CLOB, "Length" CLOB, "Race Name" CLOB, "Track" CLOB, "Location" CLOB, "Pole Position" CLOB, "Winning Driver" CLOB)

What rounds did Phoenix International Raceway host?
SELECT "Rnd" FROM table_25223 WHERE "Track" = 'Phoenix International Raceway'
SELECT "Rnd" FROM "table_25223" WHERE "Track" = 'Phoenix International Raceway'