How many different affiliations do the authors of 'Influence of using 3D images and 3D-printed objects on spatial reasoning of experts and novices' have?
Count the different affiliations of the authors of 'Influence of using 3D images and 3D-printed objects on spatial reasoning of experts and novices'.
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { <https://dblp.org/rec/conf/cogsci/MaehigashiMONMI17> <https://dblp.org/rdf/schema#authoredBy> ?x . ?x <https://dblp.org/rdf/schema#primaryAffiliation> ?answer }
<https://dblp.org/rec/conf/cogsci/MaehigashiMONMI17>