def METHOD_NAME(gender):
    global GENDER_MALE
    global GENDER_FEMALE
    global GENDER_NOT_SURE
    global GENDER_STRING_MALE
    global GENDER_STRING_FEMALE
    global GENDER_STRING_UNSURE
    if gender is None:
        return gender
    if gender == GENDER_MALE:
        return GENDER_STRING_MALE
    if gender == GENDER_FEMALE:
        return GENDER_STRING_FEMALE
    return GENDER_STRING_UNSURE