About: http://webisa.webdatacommons.org/309922506

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 most reasonable assumption is they are coming from a class of active galactic nuclei called blazars,??? Sokolsky says.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org