_:nd6b50f91dcae49329f0a7e6602a52970xb0
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://rch.ac.ir/article/Details/9085?%D8%AF%D8%A7%D9%88%D9%88%D8%AF-%D8%AE%D8%B6%D8%B1-%D8%AD%D8%B3%D9%86%DB%8C>