About: http://webisa.webdatacommons.org/443372932

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	If a date is uncertain, use a broad or vague designation or other terms such as ca. and probably to express uncertainty (e.g., the word probably in the example below).
http://www.w3.org/ns/prov#wasQuotedFrom	getty.edu