what is the capacity when the home city is zagreb and the manager is zlatko kranj ar?
CREATE TABLE table_name_88 (
    capacity INTEGER,
    home_city VARCHAR,
    manager VARCHAR
)
SELECT AVG(capacity) FROM table_name_88 WHERE home_city = "zagreb" AND manager = "zlatko kranjčar"
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: what is the capacity when the home city is zagreb and the manager is zlatko kranj ar? ### Input: CREATE TABLE table_name_88 (
    capacity INTEGER,
    home_city VARCHAR,
    manager VARCHAR
) ### Response: SELECT AVG(capacity) FROM table_name_88 WHERE home_city = "zagreb" AND manager = "zlatko kranjčar"