<http://webisa.webdatacommons.org/190361362>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/439428450>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/190361362> .
<http://webisa.webdatacommons.org/190361362>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<emcl.info> .
<http://webisa.webdatacommons.org/190361362>	<http://www.w3.org/ns/prov#value>	"Coupon use became more widespread in 1909 when C.W. Post distributed coupons to help sell breakfast cereals and other products." .