List the name and the number of stations for all the cities that have at least 15 stations.
CREATE TABLE station (city VARCHAR)
SELECT city, COUNT(*) FROM station GROUP BY city HAVING COUNT(*) >= 15
### Context: CREATE TABLE station (city VARCHAR) ### Question: List the name and the number of stations for all the cities that have at least 15 stations. ### Answer: SELECT city, COUNT(*) FROM station GROUP BY city HAVING COUNT(*) >= 15