Show the name for regions and the number of storms for each region.
SELECT T1.region_name ,  count(*) FROM region AS T1 JOIN affected_region AS T2 ON T1.region_id = T2.region_id GROUP BY T1.region_id
name for regions refers to region_name; number of storms for each region requires counting storms associated with each region, which implies a JOIN operation between region and affected_region tables and aggregation with COUNT;