About: http://webisa.webdatacommons.org/448339239

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	Even some mapping rules may be applied, e.g. use '??' instead of '??' because the former looks almost the same and is in the default alphabet.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com