What is the count of authors of 'GAM: A Grid Awareness Model for Grid Environments' who have Universidad Polit\u00E9cnica de Madrid as their primary affiliation?
How many authors of 'GAM: A Grid Awareness Model for Grid Environments' have Universidad Polit\u00E9cnica de Madrid as their primary affiliation?
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { <https://dblp.org/rec/conf/sag/HerreroPR04> <https://dblp.org/rdf/schema#authoredBy> ?answer . ?answer <https://dblp.org/rdf/schema#primaryAffiliation> 'Universidad Polit\u00E9cnica de Madrid' }
<https://dblp.org/rec/conf/sag/HerreroPR04>