About: http://webisa.webdatacommons.org/234202177

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	Cosmic rays, discovered in 1912, really are particles, not rays: either bare protons (hydrogen nuclei) or the centers or nuclei of heavier elements such as carbon, oxygen, nitrogen or iron.
http://www.w3.org/ns/prov#wasQuotedFrom	dailygalaxy.com