CREATE TABLE table_63725 ("Date" CLOB, "Show" CLOB, "Venue" CLOB, "City" CLOB, "Tickets sold / available" CLOB, "Gross revenue" CLOB)

Which city has a venue of the Arco Arena?
SELECT "City" FROM table_63725 WHERE "Venue" = 'arco arena'
SELECT "City" FROM "table_63725" WHERE "Venue" = 'arco arena'