About: http://webisa.webdatacommons.org/294424763

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	From other sources he estimated that in 1978 there were 21 million handguns and 33 million guns of all types owned primarily for protection or defense.
http://www.w3.org/ns/prov#wasQuotedFrom	scienceblogs.com