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