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_:vb50851716	<http://purl.org/net/provenance/ns#performedBy>	<http://www.yulewangzhan.cn#spongerInstance> .
_:vb50851716	<http://www.w3.org/2007/05/powder-s#describedby>	<http://demo.openlinksw.com/about/id/http/www.yulewangzhan.cn/> .
_:vb50851716	<http://purl.org/net/provenance/ns#accessedService>	<http://www.yulewangzhan.cn/> .
_:vb50851716	<http://purl.org/net/provenance/ns#performedAt>	"2021-04-18T10:18:25.385597"^^<http://www.w3.org/2001/XMLSchema#dateTime> .