On May 17, 2007, at 4:58 AM, Eric Jain wrote:
> 2. tools don't support reification well (just try writing a SPARQL
> query that queries statements about statements).
prefix dc: <http://purl.org/dc/elements/1.1/>
prefix sc: <http://purl.org/science/owl/sciencecommons/>
insert into graph <http://purl.org/commons/hcls/proto>
{ sc:s1 sc:p1 sc:o1.
_:foo rdf:type rdf:Statement.
_:foo rdf:subject sc:s1.
_:foo rdf:predicate sc:p1.
_:foo rdf:object sc:o1.
_:foo dc:creator "Alan"
}
prefix dc: <http://purl.org/dc/elements/1.1/>
prefix sc: <http://purl.org/science/owl/sciencecommons/>
select ?s ?p ?o ?by
from <http://purl.org/commons/hcls/proto>
where
{ ?s ?p ?o.
?statement rdf:type rdf:Statement.
?statement rdf:subject ?s.
?statement rdf:predicate ?p.
?statement rdf:object ?o.
?statement dc:creator ?by
}
(results in attached picture - in case it doesn't show up in line in
your email)
