<http://schema.org/thumbnailUrl>
<http://www.theledger.com/global/images/fb/LL.png>
<http://www.theledger.com/article/20120921/COLUMNISTS0301/120929840/1092/COLUMNISTS0203?Title=Curiosity-About-The-Red-Planet-Head-to-a-Kids-Site-for-Answers->