Count the different affiliations of the authors of 'Computational Urban Modeling: From Mainframes to Data Streams'.
How many different affiliations do the authors of 'Computational Urban Modeling: From Mainframes to Data Streams' have?
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { <https://dblp.org/rec/conf/aaai/Moosavi15> <https://dblp.org/rdf/schema#authoredBy> ?x . ?x <https://dblp.org/rdf/schema#primaryAffiliation> ?answer }
<https://dblp.org/rec/conf/aaai/Moosavi15>