def classify_helmet_belt_worn(x):
    """
    This function returns a strinig representation of the int value of the field which specifies whether the
    person was wearing a setabelt or a helmet. This specification is from the Road Crash Statistics Victoria , 2013 Edition
    document.
    :param x: int value representing the classify helmet belt worn field
    :return: string representation of the integer value
    """
    if x == 1:
        return 'Seatbelt Worn'
    elif x == 2:
        return 'Seatbelt Not Worn'
    elif x == 3:
        return 'Child Restraint Worn'
    elif x == 4:
        return 'Child Restraint Not Worn'
    elif x == 5:
        return 'Seatbelt/restraint Not fitted'
    elif x == 6:
        return 'Crash Helmet Worn'
    elif x == 7:
        return 'Crash Helmet Not Worn'
    elif x == 8:
        return 'Not Appropriate'
    else:
        return 'Not Known'