_:nd46fb37d7be4494f9cc6ffa829e283b0xb4
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://link.springer.com/article/10.1007/s11367-019-01656-0?error=cookies_not_supported&code=48459c94-afbe-4bf2-80eb-645dcb636c1e>