About: http://webisa.webdatacommons.org/207227630

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	Most rackets are now made of composite materials including carbon fibre or fiberglass, metals such as titanium alloys, or ceramics.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org