Count the different affiliations of the authors of 'Combining sketch and tone for pencil drawing production'.
How many different affiliations do the authors of 'Combining sketch and tone for pencil drawing production' have?
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { <https://dblp.org/rec/conf/npar/LuXJ12> <https://dblp.org/rdf/schema#authoredBy> ?x . ?x <https://dblp.org/rdf/schema#primaryAffiliation> ?answer }
<https://dblp.org/rec/conf/npar/LuXJ12>