About: http://webisa.webdatacommons.org/394098208

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 addition, a material having small work function can be used for the material for the cathode 113, and for example, alkali metal, alkali earth metal such as Ca and the like, and alloys containing these metals can be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr