How many tickets were there sold/available in Barcelona?
CREATE TABLE table_70493 (
    "Venue" text,
    "City" text,
    "Tickets Sold / Available" text,
    "Gross Revenue (1986)" text,
    "Gross Revenue (2011)" text
)
SELECT "Tickets Sold / Available" FROM table_70493 WHERE "City" = 'barcelona'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many tickets were there sold/available in Barcelona? ### Input: CREATE TABLE table_70493 (
    "Venue" text,
    "City" text,
    "Tickets Sold / Available" text,
    "Gross Revenue (1986)" text,
    "Gross Revenue (2011)" text
) ### Response: SELECT "Tickets Sold / Available" FROM table_70493 WHERE "City" = 'barcelona'