CREATE TABLE storm (name VARCHAR2, storm_id VARCHAR2)
CREATE TABLE region (region_id VARCHAR2, region_name VARCHAR2)
CREATE TABLE affected_region (region_id VARCHAR2, storm_id VARCHAR2)

Show all storm names affecting region 'Denmark'.
SELECT T3.name FROM affected_region AS T1 JOIN region AS T2 ON T1.region_id = T2.region_id JOIN storm AS T3 ON T1.storm_id = T3.storm_id WHERE T2.region_name = 'Denmark'
SELECT "T3"."name" FROM "affected_region" "T1" JOIN "region" "T2" ON "T1"."region_id" = "T2"."region_id" AND "T2"."region_name" = 'Denmark' JOIN "storm" "T3" ON "T1"."storm_id" = "T3"."storm_id"