Get classification for all matching URLs.

        :param urls: a sequence of URLs to test
        :return: a tuple containing matching URL and classification
        string pertaining to it

def _get_match_and_classification(self, urls):
        """Get classification for all matching URLs.

        :param urls: a sequence of URLs to test
        :return: a tuple containing matching URL and classification
        string pertaining to it
        """
        for url_list, response in self._query(urls):
            classification_set = response.text.splitlines()
            for url, _class in zip(url_list, classification_set):
                if _class != 'ok':
                    yield url, _class