About: http://webisa.webdatacommons.org/312579285

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	The pin constraint intuitively corresponds to a push pin which may be used to affix notes or other items to a cork board, e.g., on a refrigerator, or at a desk or other workspace.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com