while designing Explorator [1], where one can explore one or more
triple repositories that provide SPARQL enpoints (as well as direct URI
dereferencing), I found the following question, to which I don't really
know the answer...
For the sake of this discussion, I'm considering only such sites, i.e.,
those that provide SPRQL enpoints.
For a given URI r, is there any relation between the triples I get when
I dereference it directly, as opposed to querying the SPARQL enpoint
for all triples <r, ?p, ?o> ? Should there be (I could also get
<?s, ?p, r>, for example) ?
For sites such as dbpedia I believe that I get the same set of triples.
But I believe this is not a general behavior.
Should there be a good practice about this for LoD sites that provide
SPARQL endpoints?
At the very least, perhaps this could also be described in the semantic
sitemap.xml, no?