<http://schema.org/name>
"D\u1ECBch v\u1EE5 tr\u1EF1c tuy\u1EBFn"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.forumgiaitri.net/t5386-tinh-nang-yeu-cau-add-contact-hien-ang-uoc-thu-nghiem-trong-facebook-messenger>