As of the last time I looked, Wikidata and DBPedia do _not_ share subject URIs. The fact that they come from the same semi-structured data doesn't imply anything about how they are built up as RDF. AFAIK, Wikidata itself isn't RDF at all internally, but is mapped into RDF for publication.
https://meta.wikimedia.org/wiki/Wikidata/Essays/URI_scheme Otherwise, it looks like you want to do provenance work, and named graphs are a pretty good way to do that. Although, if you are limiting yourself to Wikidata and DBPedia, you might be able to distinguish the source of a triple just based on the namespace of the subject. Is this just for your own exploration (in which case you might want to avoid Fuseki entirely and just work with TDB)? ajs6f > On Nov 26, 2017, at 2:30 PM, Laura Morales <[email protected]> wrote: > >> Do they share triple subjects? > > Yes dbpedia/wikidata are two graphs of the same source > >> I am trying to understand why you are intent on putting them in separate >> graphs. > > 1- to query only one source if I want data from a single graph (either > dbpedia or wikipedia and not both) > 2- to extract the origin of a subject, for example select (subject, graph) > 3- because I can update only one of the two graphs instead of having to > update both of them
