About: http://webisa.webdatacommons.org/246126018

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	The standard model postulates that hadrons???protons and neutrons are the most common examples, accounting for an estimated 99 percent of the mass of the visible universe between them???are composed of three quarks.
http://www.w3.org/ns/prov#wasQuotedFrom	arstechnica.com