About: http://webisa.webdatacommons.org/390871625

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	Teeth consist mainly of calcium, phosphate and other ions in a structure known as ???hydroxyapatite.??? Dental enamel is porous and is susceptible to acid dissolution during the process of demineralization.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com