_:n4671b013663f42de99478ba72f4cb564xb0
<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<https://oscimg.oschina.net/oscnet/b90fdc1529ab1c14fdf81287bd0a2cff26c.png>
<https://my.oschina.net/u/4391973/blog/3238564>