<http://schema.org/caption>
"\u9006\u65B9\u5411\u3067\u9AD8\u901F\u304B\u3089\u4E00\u822C\u9053\u3078\u3002\u3053\u3061\u3089\u306F\u30AD\u30C1\u30F3\u3068\u8A8D\u8B58"^^<http://www.w3.org/2001/XMLSchema#string>
<http://car.watch.impress.co.jp/img/car/docs/696/019/html/158.jpg.html>