How many different affiliations do the authors of 'Towards Wifi Mobility without Fast Handover' have?
Count the different affiliations of the authors of 'Towards Wifi Mobility without Fast Handover'.
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { <https://dblp.org/rec/conf/nsdi/CroitoruNR15> <https://dblp.org/rdf/schema#authoredBy> ?x . ?x <https://dblp.org/rdf/schema#primaryAffiliation> ?answer }
<https://dblp.org/rec/conf/nsdi/CroitoruNR15>