About: http://webisa.webdatacommons.org/167222556

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	Between the core and surface is an intervening layer of zirconia-hydroxyapatite composite with 25 volume percent hydroxyapatite.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com