Count the different affiliations of the authors of 'A brain imaging study of the choice procedure'.
How many different affiliations do the authors of 'A brain imaging study of the choice procedure' have?
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { <https://dblp.org/rec/journals/geb/RustichiniDGSP05> <https://dblp.org/rdf/schema#authoredBy> ?x . ?x <https://dblp.org/rdf/schema#primaryAffiliation> ?answer }
<https://dblp.org/rec/journals/geb/RustichiniDGSP05>