CREATE TABLE status (bikes_available INTEGER, station_id VARCHAR(255), id VARCHAR(255), city VARCHAR(255)); CREATE TABLE station (bikes_available INTEGER, station_id VARCHAR(255), id VARCHAR(255), city VARCHAR(255))
What is the average bike availability in stations that are not located in Palo Alto?
    
SQL: SELECT AVG(bikes_available) FROM status WHERE NOT station_id IN (SELECT id FROM station WHERE city = "Palo Alto")