About: http://webisa.webdatacommons.org/200449215

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 molded cores may include metal oxides such as zinc oxide to improve the coefficient of restitution or to increase the core weight.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com