About: http://webisa.webdatacommons.org/395101573

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	Then, if there is an id, ds is declared as a new dataset but not given a value (other than an empty dataset).
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com