<http://schema.org/headline>
"Perl\u3067\u30C6\u30B9\u30C8\u304C\u3053\u3051\u3066\u6CE3\u304D\u305D\u3046\u306A\u3068\u304D\u306ETIPS - @bayashi Diary"^^<http://www.w3.org/2001/XMLSchema#string>
<https://bayashi.net/diary/2015/0702>