About: http://webisa.webdatacommons.org/24657923

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	Not to be confused with Egyptian kings of the same name, Ptolemy lived in Alexandria and wrote on such subjects as astronomy, astrology, music, history, optics, and geography.
http://www.w3.org/ns/prov#wasQuotedFrom	princeton.edu