About: http://webisa.webdatacommons.org/104875266

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	Mathematicians and astronomers including Hipparchus developed techniques for the measurement of angles, and tables for calculations with these angles.
http://www.w3.org/ns/prov#wasQuotedFrom	cam.ac.uk