About: http://webisa.webdatacommons.org/109194973

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	In case anyone else is curious, bookshelves seem to be the exception to the any block which drops an item other than the block itself rule (granted, you did say mined); they always drop three books.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com