List the name and the number of stations for all the cities that have at least 15 stations.
SELECT city ,  COUNT(*) FROM station GROUP BY city HAVING COUNT(*)  >=  15
SELECT city ,  COUNT(*) FROM station GROUP BY city HAVING COUNT(*)  >=  15
[{'city': 'San Francisco', 'COUNT(*)': 35}, {'city': 'San Jose', 'COUNT(*)': 16}]