def question(self):
        """获取答案所在问题.

        :return: 答案所在问题
        :rtype: Question
        """
        from .question import Question

        question_link = self.soup.find(
            "h2", class_="zm-item-title").a
        url = Zhihu_URL + question_link["href"]
        title = question_link.text.strip()
        followers_num = int(self.soup.find(
            'div', class_='zh-question-followers-sidebar').div.a.strong.text)
        answers_num = int(re_get_number.match(self.soup.find(
            'div', class_='zh-answers-title').h3.a.text).group(1))
        return Question(url, title, followers_num, answers_num,
                        session=self._session)