private Person generateRandomProfessor() {
    Professor prof = new Professor();

    String firstName = pickRandomString(FIRST_NAMES);
    String lastName = pickRandomString(LAST_NAMES);
    prof.setName("Dr. " + firstName + " " + lastName);

    String subject = pickRandomString(SUBJECTS);
    prof.setDescription("Professor of " + subject);

    generateRandomSchedule(prof.getTeachingSchedule());

    return prof;
  }