About: http://webisa.webdatacommons.org/125032618

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	Proton beams are produced, for example, by accelerators such as Van de Graaff, linear accelerators and cyclotrons.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com