About: http://webisa.webdatacommons.org/34975540

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 various materials such as wood, bamboo, plastic, stone, bone, ivory, glass, and synthetic materials.
http://www.w3.org/ns/prov#wasQuotedFrom	pickyguide.com