About: http://webisa.webdatacommons.org/81197393

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	So in the end, the first object is a disk and the second object is the circular boundary of that disk.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com