@staticmethod
def _clean_street_name(street):
    """
        clean and normalize street name
        :param street: street
        :return: clean street name
        """
    if street.strip() == 'geolocation':
        street = ''
    if street.strip() == 'False':
        street = ''
    street = street.replace('str. ', 'strasse ')
    street = street.replace('str ', 'strasse ')
    return street.strip()
