Question: Who have done their PhDs under a National Medal of Science winner?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/prizes> <http://dbpedia.org/resource/National_Medal_of_Science> . ?uri <http://dbpedia.org/property/doctoralAdvisor> ?x  . }
Answer: The scientists, whose doctoral advisor have a National Medal of Science prize, are [answer].