List all the former partners of the figure skater whose one of the former partner was Andrea poapst ?
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/formerPartner> <http://dbpedia.org/resource/Andrea_Poapst> . ?x <http://dbpedia.org/ontology/formerPartner> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/FigureSkater>}
Andrea_Poapst