<http://schema.org/headline>
"T\u1ED5ng th\u1ED1ng Hoa K\u1EF3 Obama \u0111\u00E3 t\u1EDBi Nh\u1EADt sau khi r\u1EDDi Vi\u1EC7t Nam"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.vietnamplus.vn/tong-thong-hoa-ky-obama-da-toi-nhat-sau-khi-roi-viet-nam/387726.vnp>