Question: What is the headquarters of the public transit system which is the section of Red Ahead ?
SPARQL query: SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Red_Ahead> <http://dbpedia.org/ontology/isPartOf> ?x . ?x <http://dbpedia.org/property/headquarters> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/PublicTransitSystem>}
Answer: The headquarters of the public transit system which is the section of Red Ahead are [567, Chicago].