Input (grade 4): She arrives with a client, a creepy professor (played by the same actor as Dr. Goll, Lulu's first husband).
Output (grade 6): She arrives with a client, a professor (played by the same actor as Dr. Goll, Lulu's first husband). Lulu goes out, and returns with another client, the Negro (played by the same actor as the Painter, Lulu's second husband).