For which party's PM did Chidambaram Subramaniam serve?
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Chidambaram_Subramaniam> <http://dbpedia.org/property/primeminister> ?x . ?x <http://dbpedia.org/ontology/party> ?uri  . }
Chidambaram_Subramaniam