About: http://webisa.webdatacommons.org/94364249

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 Hertzsprung-Russell Diagram When astronomers realized the variety of stars that exist, their first step was to devise a sensible way to arrange and study the data to find relationships among the various forms of stars.
http://www.w3.org/ns/prov#wasQuotedFrom	teachastronomy.com