About: http://webisa.webdatacommons.org/106545070

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Note, the prior effort to make iterators copyable was a failure. It was difficult to do in the general case and the cases we did provide had zero uptake (i.e. they were never used). ISTM, that pickling iterators faces the same issues.
http://www.w3.org/ns/prov#wasQuotedFrom	python.org