Subject	Predicate	Object	Graph
r4r:Provenance http://guava.iis.sinica.edu.tw/r4r/Provenance	r4r:Definition http://guava.iis.sinica.edu.tw/r4r/Definition	metadata, metadata about metad ...... ted as part of the Provenance. http://www.w3.org/2001/XMLSchema#string	graph:default https://triplydb.com/none/r4r/graphs/default