<http://schema.org/thumbnailUrl>
<http://www.heraldnet.com/apps/pbcsi.dll/bilde?Site=DH&amp;Date=20140128&amp;Category=BLOG55&amp;ArtNo=140109824&amp;Ref=AR&amp;MaxW=500&amp;MaxH=500>
<http://www.heraldnet.com/article/20140128/BLOG55/140109824/1007/Jan.-28-1986-Space-shuttle-Challenger-disaster>