[dotNetRDF-Support] UriFormatException

[Frank S. <fs...@in...>]

Hello Rob,

I get a really strange UriFormatException (Ungültiger URI: Das 
URI-Format konnte nicht bestimmt werden.)  when calling 
SparqlRemoteEndpoint.QueryWithResultSet with the following query:

PREFIX mbo: <http://creativeartefact.org/ontology/> PREFIX rdfs: 
<http://www.w3.org/2000/01/rdf-schema#> SELECT DISTINCT ?uri ?label ?dis 
?ann WHERE {?uri a mbo:Artist. ?uri rdfs:label ?label. OPTIONAL {?uri 
mbo:disambiguation ?dis}. OPTIONAL {?uri mbo:annotation ?ann}. }

With a similar query, I don't get any error:

PREFIX mbo: <http://creativeartefact.org/ontology/> PREFIX rdfs: 
<http://www.w3.org/2000/01/rdf-schema#> SELECT DISTINCT * WHERE {?uri a 
mbo:Organiser. ?uri rdfs:label ?label. OPTIONAL {?uri mbo:city ?city}. 
OPTIONAL {?uri mbo:street ?street}. OPTIONAL {?uri mbo:postalcode 
?postalcode}. }

When running the problematic query in the browser-frontend of my 
sparql-endpoint, I get the results as expected. Any idea, where the 
problem might be?

Ciao,
Frank
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