About: http://webisa.webdatacommons.org/193433018

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	The source 5 is located at a focus of an ellipse a which has a second focus 12, which in this case is a virtual focus as the elliptical surface does not continue beyond end wall 3.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com