CREATE TABLE country (country_id DECIMAL, name TEXT, population DECIMAL, area DECIMAL, languages TEXT)
CREATE TABLE roller_coaster (roller_coaster_id DECIMAL, name TEXT, park TEXT, country_id DECIMAL, length DECIMAL, height DECIMAL, speed TEXT, opened TEXT, status TEXT)

Show the names of roller coasters and names of country they are in.
SELECT T2.name, T1.name FROM country AS T1 JOIN roller_coaster AS T2 ON T1.country_id = T2.country_id
SELECT "T2"."name", "T1"."name" FROM "country" AS "T1" JOIN "roller_coaster" AS "T2" ON "T1"."country_id" = "T2"."country_id"