What is the average, minimum, and maximum age for all French singers?
SELECT avg(age) ,  min(age) ,  max(age) FROM singer WHERE country  =  'France'
SELECT avg(age) ,  min(age) ,  max(age) FROM singer WHERE country  =  'France'
[{'avg(age)': 34.5, 'min(age)': 25, 'max(age)': 43}]