About: http://webisa.webdatacommons.org/327708590

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	a second surface opposite the first surface, the second surface including a second portion extending at a second acute angle with respect to the chamber midline;
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr