CREATE TABLE table_33306 ("Year" FLOAT, "Gold" TEXT, "Silver" TEXT, "Bronze" TEXT, "Venue" TEXT)

Where was 2010 tournament where the United States received the silver?
SELECT "Venue" FROM table_33306 WHERE "Silver" = 'united states' AND "Year" = '2010'
SELECT "Venue" FROM "table_33306" WHERE "Silver" = 'united states' AND "Year" = '2010'