About: http://webisa.webdatacommons.org/227223125

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	As best as I can tell the performance for adding a single book to a library is not significantly degraded, there is a long wait because after adding, the library has to be re-sorted, but he is about it.
http://www.w3.org/ns/prov#wasQuotedFrom	mobileread.com