What is the Nickname of the school where Jeff Hornacek studied  ?
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Jeff_Hornacek> <http://dbpedia.org/property/highschool> ?x . ?x <http://dbpedia.org/property/nickname> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/School>}
Jeff_Hornacek