<http://schema.org/position>
"2"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://www.scribd.com/document/41225467/%E6%AF%9B%E6%B3%BD%E4%B8%9C%E9%80%89%E9%9B%86-%E5%8D%B7%E4%B8%89-%E4%B8%9C%E5%8C%97%E4%B9%A6%E5%BA%97-1948%E5%B9%B4>