About: http://webisa.webdatacommons.org/324872221

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 they are made of glass, sometimes MDF, or wood, or other materials.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com