About: http://webisa.webdatacommons.org/405705127

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 function Dynamic-zoom-reference-point is selected and activates when the angular bearing 33 between the reference-point 30 and the selection-point 31 is within a predetermined range, such as 180 to 210 degrees.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com