CREATE TABLE department (dept_name CLOB, building CLOB, budget NUMBER)
CREATE TABLE classroom (building CLOB, room_number CLOB, capacity NUMBER)
CREATE TABLE student (id CLOB, name CLOB, dept_name CLOB, tot_cred NUMBER)
CREATE TABLE section (course_id CLOB, sec_id CLOB, semester CLOB, year NUMBER, building CLOB, room_number CLOB, time_slot_id CLOB)
CREATE TABLE advisor (s_id CLOB, i_id CLOB)
CREATE TABLE teaches (id CLOB, course_id CLOB, sec_id CLOB, semester CLOB, year NUMBER)
CREATE TABLE course (course_id CLOB, title CLOB, dept_name CLOB, credits NUMBER)
CREATE TABLE time_slot (time_slot_id CLOB, day CLOB, start_hr NUMBER, start_min NUMBER, end_hr NUMBER, end_min NUMBER)
CREATE TABLE instructor (id CLOB, name CLOB, dept_name CLOB, salary NUMBER)
CREATE TABLE takes (id CLOB, course_id CLOB, sec_id CLOB, semester CLOB, year NUMBER, grade CLOB)
CREATE TABLE prereq (course_id CLOB, prereq_id CLOB)

What are the names of Art instructors who have taught a course, and the corresponding course id?
SELECT name, course_id FROM instructor AS T1 JOIN teaches AS T2 ON T1.id = T2.id WHERE T1.dept_name = 'Art'
SELECT "name", "course_id" FROM "instructor" "T1" JOIN "teaches" "T2" ON "T1"."id" = "T2"."id" WHERE "T1"."dept_name" = 'Art'