About: http://webisa.webdatacommons.org/334162135

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	Researchers now said the pebbles' grain size, roundness and other characteristics suggest that they had been transported by water over long distances.
http://www.w3.org/ns/prov#wasQuotedFrom	xinhuanet.com