CREATE TABLE trip (id VARCHAR(255), start_station_id VARCHAR(255)); CREATE TABLE station (id VARCHAR(255), dock_count VARCHAR(255))
Which trip started from the station with the largest dock count? Give me the trip id.
    
SQL: SELECT T1.id FROM trip AS T1 JOIN station AS T2 ON T1.start_station_id = T2.id ORDER BY T2.dock_count DESC LIMIT 1