<http://schema.org/headline>
"15 doanh nghi\u1EC7p l\u1EDBn cam k\u1EBFt cung \u1EE9ng th\u1EF1c ph\u1EA9m an to\u00E0n"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.baomoi.com/15-doanh-nghiep-lon-cam-ket-cung-ung-thuc-pham-an-toan/c/20521133.epi>