Question: What is the nickname of the club managed by Piotr baron?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/manager> <http://dbpedia.org/resource/Piotr_Baron> . ?x <http://dbpedia.org/property/nickname> ?uri  . }
Answer: [Sparta] is the nickname of the club whose manager is Piotr Baron.