About: http://webisa.webdatacommons.org/456401540

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	Index structures like B-trees also reduce the number of disk accesses, and are more often used to index on-disk data in part because they can index many types of data and can be updated online.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org