Input (grade 12): The son of Parzival (Percival), he is a knight of the Holy Grail sent in a boat pulled by swans to rescue a maiden who can never ask his identity.
Output (grade 12): He is the son of Parzival (Percival), he is a knight of the Holy Grail who is sent in a boat pulled by swans to rescue a girl who is falsely accused of murder.