Question: What is the baseball team whose club manager's debut team is Houston Astros?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/debutTeam> <http://dbpedia.org/resource/Houston_Astros> . ?uri <http://dbpedia.org/ontology/manager> ?x  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/BaseballTeam>}
Answer: The baseball teams whose manager's debut team is Houston Astros are [Seattle Mariners, San Francisco Giants].