Table: u2_2001_tour
Columns: date
show
venue
city
tickets_sold_available
gross_revenue

Question: What is the number of tickets sold and available for the concert at Long Beach Arena?
SQL: SELECT "tickets_sold_available" FROM u2_2001_tour WHERE "venue" = 'long beach arena'

Question: Which city has a venue of the Arco Arena?
SQL: SELECT "city" FROM u2_2001_tour WHERE "venue" = 'arco arena'