<http://schema.org/headline>
"\u7537\u6027\u304C\u30D9\u30BF\u60DA\u308C\u3059\u308B\u30C8\u30A4\u30D7\u30FC\u5973\u5B50\u3068\u306F\uFF1F"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mdpr.jp/column/detail/1556035>