That RDF quote didn't come through the mailing list (at least not for me). It became a list of URIs. Perhaps you can try pasting it as very plain text? Or you could put it in Gist or some other pastebin service?
--- A. Soroka The University of Virginia Library > On Oct 10, 2016, at 5:22 AM, Michal Krajňanský <michal.krajnan...@gmail.com> > wrote: > > Dear Stanbol Users, > > I have been experimenting with the system and I would appreciate your help > with the following problem. > > I am trying to implement a custom Graph chain like the example here: > https://stanbol.apache.org/docs/trunk/components/enhancer/chains/executionplan.html > and here: > https://stanbol.apache.org/docs/trunk/components/enhancer/chains/graphchain.html > > However, when trying to invoke the chain, I get the following exception: > > *org.apache.jena.riot [line: 6, col: 1 ] Undefined prefix: urn* > > > My execution plan RDF looks like this: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > *@prefix xsd: <http://www.w3.org/2001/XMLSchema# > <http://www.w3.org/2001/XMLSchema#>> .@prefix rdf: > <http://www.w3.org/1999/02/22-rdf-syntax-ns# > <http://www.w3.org/1999/02/22-rdf-syntax-ns#>> .@prefix ep: > <http://stanbol.apache.org/ontology/enhancer/executionplan# > <http://stanbol.apache.org/ontology/enhancer/executionplan#>> .@prefix ehp: > <http://stanbol.apache.org/ontology/enhancementproperties# > <http://stanbol.apache.org/ontology/enhancementproperties#>> > .urn:execPlan rdf:type ep:ExecutionPlan ep:hasExecutionNode > urn:node1, urn:node2, urn:node3, urn:node4, urn:node5 ep:chain > "demoChain"urn:node1 rdf:type stanbol:ExecutionNode > ep:inExecutionPlan urn:execPlan ep:engine langIdurn:node2 rdf:type > ep:ExecutionNode ep:inExecutionPlan urn:execPlan ep:dependsOn > urn:node1 ep:engine nerurn:node3 rdf:type ep:ExecutionNode > ep:inExecutionPlan urn:execPlan ep:dependsOn urn:node1 ep:engine > dbpediaLinkingurn:node4 rdf:type ep:ExecutionNode ep:inExecutionPlan > urn:execPlan ep:dependsOn urn:node1 ep:engine > geonamesLinkingurn:node5 rdf:type ep:ExecutionNode ep:inExecutionPlan > urn:execPlan ep:engine zemanta ep:optional "true"^^xsd:boolean* > > Thank you in advance for your kind help. > > Best Regards, > > > Michal Krajnansky
