About: http://webisa.webdatacommons.org/103898055

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	No, it does not work. isBaseLayer only defines whether the layer is a base layer.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com