<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/blog/2013/08/27/E-cigarettes-still-contain-carcinogens-pose-health-risks-study-says/1981377654212/?spt=mps&or=3>