What is the {road} for {terminus location} of {Las Vegas}
Route
 select distinct ?sbj where { ?sbj wdt:P609 wd:Q23768 . ?sbj wdt:P31 wd:Q34442 } 
select distinct ?subj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?subj . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P609> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q23768> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q34442> } 
What is the best route?