Undefined namespace prefix on previously working SPARQL query -


i interested in geographic coordinates of banks, central banks, financial institutions, universities , colleges. query:

select ?label ?lat ?long {   {?x dct:subject category:international_finance_institutions } union   {?x dct:subject category:federal_reserve_banks } union    {?x dct:subject category:central_banks } union    {?x <http://schema.org/collegeoruniversity> }.      ?x geo:lat ?lat .      ?x geo:long ?long .      ?x rdfs:label ?label.         filter (langmatches(lang(?label), 'en'))  }

exactly code worked (last download: june 21st, 2015). morning keep getting error: virtuoso 37000 error sp030: sparql compiler, line 5: undefined namespace prefix @ 'category' before '}'. checking the list of predefined namespaces, seems correct. what's wrong category? btw: tried other codes offered on side, , not working. did virtuoso guys change something?

they have changed namespaces. need change category: dbc:.

select ?label ?lat ?long {   {?x dct:subject dbc:international_finance_institutions } union   {?x dct:subject dbc:federal_reserve_banks } union    {?x dct:subject dbc:central_banks } union    {?x <http://schema.org/collegeoruniversity> }.      ?x geo:lat ?lat .      ?x geo:long ?long .      ?x rdfs:label ?label.     filter (langmatches(lang(?label), 'en'))  }

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