About: http://webisa.webdatacommons.org/97966126

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	Electrons and Positrons consist of a photon and possibly something else which is undetectable such as dark energy, because 2 photons are emitted when they annihilate each other and the dark particles becomes invisible. 17.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org