About: http://webisa.webdatacommons.org/97980273

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	Black holes are the most likely source of the mysterious ultra high-energy cosmic rays that bombard the planet, scientists have discovered.
http://www.w3.org/ns/prov#wasQuotedFrom	bbc.co.uk