About: http://webisa.webdatacommons.org/382829910

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	I would like to produce a hash in which each key is a category string and each element is a product with that category, akin to the following:
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com