About: http://webisa.webdatacommons.org/231717436

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	???It???s hard to believe dark matter is an idea that???s 80 years old,??? said Professor David Brown of the University of Louisville. ???Of course, we still don???t know what dark matter is.
http://www.w3.org/ns/prov#wasQuotedFrom	bnl.gov