Generate an array of sentences
        :example ['Lorem ipsum dolor sit amet.', 'Consectetur adipisicing eli.']

        Keyword arguments:
        :param nb: how many sentences to return
        :param ext_word_list: a list of words you would like to have instead of
            'Lorem ipsum'.

        :rtype: list

def sentences(self, nb=3, ext_word_list=None):
        """
        Generate an array of sentences
        :example ['Lorem ipsum dolor sit amet.', 'Consectetur adipisicing eli.']

        Keyword arguments:
        :param nb: how many sentences to return
        :param ext_word_list: a list of words you would like to have instead of
            'Lorem ipsum'.

        :rtype: list
        """
        return [self.sentence(ext_word_list=ext_word_list)
                for _ in range(0, nb)]