About: http://webisa.webdatacommons.org/206871595

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	Such combinations make up the particles known as mesons, which are unstable because the quark and antiquark can annihilate each other, producing electrons and other particles.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com