def METHOD_NAME(self, _html, _url):
    """
    Parameters
    ------------------
    _html: string
        The HTML page that was extracted from Common Crawls WARC file.
    _url: string
        The url for the webpage.
    Returns
    ------------------
    A tab separated string which contains the meta data that was extracted from the HTML.
    """
    soup                = BeautifulSoup(_html, 'html.parser')
    otherMetaData       = {}
    src                 = None
    license             = None
    version             = None
    imageURL            = None
    formatted           = None
    self.clearFields()
    #identify the license
    licenseInfo = soup.find('a', {'rel': 'license', 'href': True})
    if licenseInfo:
        ccURL               = urlparse(licenseInfo.attrs['href'].strip())
        license, version    = self.getLicense(ccURL.netloc, ccURL.path, _url)
        if not license:
            logging.warning('License not detected in url: {}'.format(_url))
            return None
        self.license            = license
        self.licenseVersion     = version
        #get the image
        imgProperty = soup.find('img', {'class': 'resource', 'src': True})
        if imgProperty:
            self.url     = self.validateContent('', imgProperty, 'src')
            if self.url:
                self.url = '{}{}'.format(self.domain.strip('%'), self.url)
            self.width                      = self.validateContent('', imgProperty, 'data-width')
            self.height                     = self.validateContent('', imgProperty, 'data-height')
            otherMetaData['image_alt_text'] = self.validateContent('', imgProperty, 'alt')
        else:
            logging.warning('Image not detected in url: {}'.format(_url))
            return None
        #get the title
        title = soup.find('meta', {'property': 'og:title'}).attrs['content']
        if title:
            self.title = title
        #get the meta data
        section = soup.find('section', {'class': 'metadata'})
        if section:
            info = section.find_all(['h3', 'p'])
            for key, item in enumerate(info):
                if item.name == 'h3':
                    lbl = item.text.strip().lower().replace(' ', '_')
                    val = info[key + 1]
                    if val:
                        val                 = val.text.strip()
                        otherMetaData[lbl]  = val
            if 'conditions_of_use' in otherMetaData:
                del otherMetaData['conditions_of_use']
        #get the keywords/tags
        keywords = soup.find_all('ul', {'class': re.compile('keywords( last)?')})
        tagsList = []
        for tag in keywords:
            element = tag.find('li', {'class': None})
            if element:
                tagsList.extend(ele.strip() for ele in element.text.split('::'))
        tagsList = list(set(tagsList))
        otherMetaData['tags'] = ','.join(tagsList)
        #get the classification info
        classification = soup.find('div', {'class': 'classification well'})
        if classification:
            classType = classification.find('h3')
            if classType:
                classType = classType.text.strip().lower()
                classInfo = {}
                for item in classification.find_all('li'):
                    rank  = item.find('span', {'class': 'rank'})
                    if rank:
                        rank = rank.text.strip().lower()
                    taxon = item.find('a', {'class': re.compile('^taxon-name.*?')})
                    if taxon:
                        taxon = taxon.text.strip()
                    vern  = item.find('span', {'class': 'vernacular-name'})
                    if vern:
                        vern = vern.text.strip()
                    classInfo[rank] = '{} / {}'.format(taxon, vern)
                otherMetaData[classType] = classInfo
        related = soup.find('div', {'class': 'related navlist well'})
        if related:
            relTaxa = related.find('h3')
            if relTaxa:
                relTaxa = relTaxa.text.strip().lower().replace(' ', '_')
                taxa    = {}
                for item in related.find_all('li'):
                    rank  = item.find('span', {'class': 'rank'})
                    if rank:
                        rank = rank.text.strip().lower()
                    taxon = item.find('a', {'class': re.compile('^taxon-name.*?')})
                    if taxon:
                        taxon = taxon.text.strip()
                    vern  = item.find('span', {'class': 'vernacular-name'})
                    if vern:
                        vern = vern.text.strip()
                    taxa[rank] = '{} / {}'.format(taxon, vern)
                otherMetaData[relTaxa] = taxa
        self.foreignLandingURL = self.validateContent(_url, soup.find('meta', {'property': 'og:url'}), 'content')
        self.provider   = self.name
        self.source     = 'commoncrawl'
        if otherMetaData:
            self.metaData   = otherMetaData
        formatted = list(self.formatOutput)
        return formatted