CREATE TABLE table_57683 ("Res." TEXT, "Record" TEXT, "Opponent" TEXT, "Method" TEXT, "Event" TEXT, "Round" FLOAT, "Time" TEXT)

Which method has an Event of shooto, a Round of 2, and an Opponent of issei tamura?
SELECT "Method" FROM table_57683 WHERE "Event" = 'shooto' AND "Round" = '2' AND "Opponent" = 'issei tamura'
SELECT "Method" FROM "table_57683" WHERE "Event" = 'shooto' AND "Opponent" = 'issei tamura' AND "Round" = '2'