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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def meta_contains_article_keyword(self, response, site_dict):
 """ Determines wether the response's meta data contains the keyword 'article' :param obj response: The scrapy response :param dict site_dict: The site object from the JSON-File :return bool: Determines wether the reponse's meta data contains the keyword 'article' """

        contains_meta = response.xpath('//meta') \
            .re('(= ?["\'][^"\']*article[^"\']*["\'])')

        if not contains_meta:
            return False
        return True