About: http://webisa.webdatacommons.org/218570345

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, what is needed is a system for using cash-free vending machines without compromising the data security of such transactions between the vending machine's owner and customers of the vending machine.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com