function scrape()
 {
     foreach ($this->xpath->query('//td/table//tr/td/table//tr/td/ul/li/a') as $el) {
         $linkText = $el->textContent;
         $linkHref = $el->getAttribute('href');
         $scraper = new InstitutionScraper('http://europa.eu/whoiswho/public/' . $linkHref);
         $scraper->setSlugPrefix('agencies');
         $scraper->scrape();
         $this->flushNtriples();
     }
 }