About: http://webisa.webdatacommons.org/369913616

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	Clay is the most physically demanding surface, and he plays a lot of matches on it.
http://www.w3.org/ns/prov#wasQuotedFrom	tennis-x.com