I can write a SPARQL query for the above graph as: select ?a?b?c?d?e where{ ?r rdf:subject <Mr_X>. ?r rdf:predicate <isPresident>. ?r rdf:object <CountryZ>. ?r saidBy ?a. ?r saidOn ?b. ?r saidAt ?c. ?r confidence ?d. ?r comment ?e }
Can someone please help me write the above query using named graphs in SPARQL so that I may query over Jena? On Thu, Oct 31, 2013 at 7:17 PM, Maria Jackson <maria.jackson....@gmail.com>wrote: > I think jena employs named graphs as a way to achieve reification. As > named graphs can achieve reification by attaching only one statement with > named graphs. > Is it possible to express information of the following form using named > graphs, if yes then can someone please help me write this information using > named graphs, so that I may import the same into Jena: > > _:a rdf:subject "Mr X". > _:a rdf:predicate "isPresident". > _:a rdf:object "countryZ". > _:a saidBy "Tia". > _:a saidOn "29 October 2013". > _:a saidAt "New York". > _:a confidence 0.9. > _:a comment "This is just a comment by Tia". > > Is it possible to write the corresponding query Jena using named graph > query on the above given data? > > >