What are the hometowns of gymnasts and the corresponding number of gymnasts?
SELECT T2.Hometown ,  COUNT(*) FROM gymnast AS T1 JOIN people AS T2 ON T1.Gymnast_ID  =  T2.People_ID GROUP BY T2.Hometown
SELECT T2.Hometown ,  COUNT(*) FROM gymnast AS T1 JOIN people AS T2 ON T1.Gymnast_ID  =  T2.People_ID GROUP BY T2.Hometown
[{'Hometown': 'Bonao', 'COUNT(*)': 1}, {'Hometown': 'Los Alcarrizos', 'COUNT(*)': 1}, {'Hometown': 'Santiago de los Caballeros', 'COUNT(*)': 1}, {'Hometown': 'Santo Domingo', 'COUNT(*)': 4}]