Question: What is the debut team of the gridiron football player who coached the 1931 Staten Island Stapletons season ?
SPARQL:
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/1931_Staten_Island_Stapletons_season> <http://dbpedia.org/ontology/coach> ?x . ?x <http://dbpedia.org/property/debutteam> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/GridironFootballPlayer>}