// Don't know how I encountered this but it seems to be possible in some cases..
// Resource obj = graph.getSingleObject(r, L0.HasObject);
Resource obj = graph.getPossibleObject(r, L0.HasObject);
// Don't know how I encountered this but it seems to be possible in some cases..
// Resource obj = graph.getSingleObject(r, L0.HasObject);
Resource obj = graph.getPossibleObject(r, L0.HasObject);