About: http://webisa.webdatacommons.org/79422904

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	By the late 1800s, metal amalgam made of mercury, silver, tin, copper and other metals such as zinc became the standard for dental fillings.
http://www.w3.org/ns/prov#wasQuotedFrom	topdentists.com