Return the minimum, maximum, and average seating across all tracks.
SELECT min(seating) ,  max(seating) ,  avg(seating) FROM track
SELECT min(seating) ,  max(seating) ,  avg(seating) FROM track
[{'min(seating)': 63000.0, 'max(seating)': 168000.0, 'avg(seating)': 91526.88888888889}]