About: http://webisa.webdatacommons.org/444069460

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	Thus a modern bill must control advertising by mail, by billboards, in newspapers and magazines, and particularly over the radio.
http://www.w3.org/ns/prov#wasQuotedFrom	jamanetwork.com