About: http://webisa.webdatacommons.org/308936362

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	The material that bones are mainly composed of is calcium, phosphorus, and the connective tissue substance known as collagen.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com