CREATE TABLE actor (actor_id NUMBER, name CLOB, musical_id NUMBER, character CLOB, duration CLOB, age NUMBER)
CREATE TABLE musical (musical_id NUMBER, name CLOB, year NUMBER, award CLOB, category CLOB, nominee CLOB, result CLOB)

Show names of musicals which have at least three actors.
SELECT T2.name FROM actor AS T1 JOIN musical AS T2 ON T1.musical_id = T2.musical_id GROUP BY T1.musical_id HAVING COUNT(*) >= 3
SELECT "T2"."name" FROM "actor" "T1" JOIN "musical" "T2" ON "T1"."musical_id" = "T2"."musical_id" GROUP BY "T1"."musical_id" HAVING COUNT(*) >= 3