About: http://webisa.webdatacommons.org/270093242

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	In 1920 Harlow Shapley and Heber Curtis, two leading astronomers of their day, debated their current understanding of the universe, including whether our Galaxy was itself the whole Universe.
http://www.w3.org/ns/prov#wasQuotedFrom	nasa.gov