About: http://webisa.webdatacommons.org/274684404

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 too have some custom items, since they are similar to the main item, the customer just purchases it and then there is a section for them to fill in the details.
http://www.w3.org/ns/prov#wasQuotedFrom	practicalmachinist.com