CREATE TABLE actor (Name VARCHAR(255), Musical_ID VARCHAR(255)); CREATE TABLE musical (Musical_ID VARCHAR(255), Name VARCHAR(255))
Show names of actors that have appeared in musical with name "The Phantom of the Opera".
    
SQL: SELECT T1.Name FROM actor AS T1 JOIN musical AS T2 ON T1.Musical_ID = T2.Musical_ID WHERE T2.Name = "The Phantom of the Opera"