<http://schema.org/headline>
"Ph\u1EABu thu\u1EADt tim c\u1EE9u s\u1ED1ng b\u1EC7nh nhi song sinh n\u1EB7ng ch\u1EC9 1,5 kg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.vietnamplus.vn/phau-thuat-tim-cuu-song-benh-nhi-song-sinh-nang-chi-15-kg/394245.vnp>