About: http://webisa.webdatacommons.org/446480365

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	you answered what @Beta is, but no one knows why it uses @Beta here, except authors :)
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com