About: http://webisa.webdatacommons.org/241519590

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	on shown in FIG. 4, such as 30, 45, 60, 90, 120, 135,150, and 180 degrees, among others.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com