About: http://webisa.webdatacommons.org/199047277

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	Sometimes you just upload a photo of your receipt, and other times, you also have to scan the product's barcode for further proof of purchase.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com