<http://schema.org/headline>
"\u9ED1\u8272 Petzval \u93E1\u982D\u9810\u89BD\uFF0C\u4EE5\u53CA\u6700\u65B0\u7684\u93E1\u982D\u5BE6\u62CD\u7167"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.lomography.tw/magazine/250669-the-black-petzval-lens-preview-and-fresh-new-photos-tw>