<http://schema.org/thumbnailUrl>
<http://www.livemint.com/rf/Image-330x220/LiveMint/Period1/2013/05/18/Photos/delhi_metro--621x414.jpg>
<http://www.livemint.com/Opinion/JBtfVsnXClns09xhskzsSM/Did-the-Metro-help-reduce-air-pollution-in-Delhi.html>