<http://schema.org/description>
"The White House says major government agencies must make taxpayer-funded research freely available to the public within 12 months after publication."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Science_News/2013/02/27/US-research-to-be-free-online/UPI-25461362015248/?pvn=1>