<https://tapchibitcoin.io/phan-tich-ky-thuat-bitcoin-ngay-12-thang-9-2.html#primaryimage>
<http://schema.org/height>
"531"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://tapchibitcoin.io/phan-tich-ky-thuat-bitcoin-ngay-12-thang-9-2.html>