CREATE TABLE table_30770 ("Episode air date" TEXT, "Audition city" TEXT, "Date" TEXT, "Venue" TEXT, "Callback date" TEXT, "Callback venue" TEXT, "Golden tickets" FLOAT)

Where is the audition city when the venue is upi convention center?
SELECT "Audition city" FROM table_30770 WHERE "Venue" = 'UPI Convention Center'
SELECT "Audition city" FROM "table_30770" WHERE "Venue" = 'UPI Convention Center'