<http://webisa.webdatacommons.org/prov/480633187> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/137474988> . <http://webisa.webdatacommons.org/137474988> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/137474988> <http://www.w3.org/ns/prov#wasQuotedFrom> <capitolhillblue.com> . <http://webisa.webdatacommons.org/137474988> <http://www.w3.org/ns/prov#value> "Subjecting more firearms purchases to federal background checks has been the chief goal of Obama and gun control supporters, who promote the system as a way to prevent criminals and other risky people from getting the weapons." .