About: http://webisa.webdatacommons.org/180922930

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	They are made of materials such as cardboard, and are packed flat for easy transportation.
http://www.w3.org/ns/prov#wasQuotedFrom	design-milk.com