<http://schema.org/headline>
"Quy \u0111\u1ECBnh v\u1EC1 \u0111\u01B0\u1EDDng li\u00EAn k\u1EBFt "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bbc.com/vietnamese/institutional/2009/02/000000_links.shtml>