<http://schema.org/headline>
"Hi\u1EC3u v\u1EC1 \u0111\u1ED9 n\u00E9t \u1EA3nh (sharpness): \u0111\u1ED9 ph\u00E2n gi\u1EA3i (resolution), \u0111\u1ED9 s\u1EAFc (acutance)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.baomoi.com/hieu-ve-do-net-anh-sharpness-do-phan-giai-resolution-do-sac-acutance/c/20469557.epi>