Question: What is the alma mater of the scientist  whose PhD advisor is Jean-Claude Latombe ?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/doctoralAdvisor> <http://dbpedia.org/resource/Jean-Claude_Latombe> . ?x <http://dbpedia.org/property/almaMater> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Scientist>}