About: http://webisa.webdatacommons.org/21865976

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	While almost all galaxies except dwarfs contain an SMBH in the center, active galaxies are rare ??? fewer that 1% of galaxies in the present universe.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com