Currently (in the mat-o-lab instance), an Object Property has to exist (as Instance of "ObjectProperty"), such that is available in Blazegraph.
For the RDF of a page it does not -- therefore, currently the graph-tool shows different behavior than a Blazegraph/Sparql backend.
Avisioned solutions:
- check if all packages are correctly installed / manually create the property.
Currently (in the mat-o-lab instance), an Object Property has to exist (as Instance of "ObjectProperty"), such that is available in Blazegraph.
For the RDF of a page it does not -- therefore, currently the graph-tool shows different behavior than a Blazegraph/Sparql backend.
Avisioned solutions: