About: http://webisa.webdatacommons.org/104284786

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	However, the overall shape is not limited to a round shape, and other shapes, such as a square shape, may also be used as long as a cavity is present at the center.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com