<http://schema.org/description>
"\u9B54\u738B\u52C7\u8005\u7B2C\u4E8C\u5377\u770B\u5B8C\u4E86\u3001\u5929\u89D2\u901F\u5EA6\u6C49\u5316\u554A_(:\u0437\u309D\u2220)_"^^<http://www.w3.org/2001/XMLSchema#string>
<https://catfan.me/koyomi/p256291>