About: http://webisa.webdatacommons.org/380141182

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	Mailing is a single item under the "shipping category -- which also includes cost of materials -- that signifies the specific cost of sending the item.
http://www.w3.org/ns/prov#wasQuotedFrom	straightdope.com