SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/owner> <http://dbpedia.org/resource/Chicago,_St._Paul,_Minneapolis_and_Omaha_Railway> . ?x <http://dbpedia.org/ontology/operatedBy> ?uri . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/RailwayLine>}
Who currently operates the railway lines one of whose stockholder is Chicago, St Paul, Minneapolis and Omaha railway?
SELECT DISTINCT ?v WHERE { ?f property:owner resource:Chicago,_St._Paul,_Minneapolis_and_Omaha_Railway . ?f rdf:type ontology:Railway_Line . ?f property:operated_by ?v }
Chicago
[Chicago] is the operator  of the railway line whose stockholders are Chicago, St. Paul, Minneapolis and Omaha Railway.
[Chicago] is the operator of the rail line, with shareholders including Chicago, St. Paul, Minney and Omaha Railway.