Question: Humes High School is alma mater to which person?
SPARQL query: SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/property/education> <http://dbpedia.org/resource/Humes_High_School>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Person>}
Answer: [Elvis Presley] is the person who graduated from Humes High School.