<http://webisa.webdatacommons.org/prov/203624473> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/414323426> . <http://webisa.webdatacommons.org/414323426> <http://www.w3.org/ns/prov#value> "A third revenue stream, consisting of the PLCB mark-up on product sold, also rises and falls with sales volume, but is affected by costs such as wages and salaries, PSP enforcement, store and other rents, plus the cost of inventory." . <http://webisa.webdatacommons.org/prov/493958701> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/414323426> . <http://webisa.webdatacommons.org/414323426> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/414323426> <http://www.w3.org/ns/prov#wasQuotedFrom> <blogspot.com> .