Did {London} {twinned administrative body} {Phnom Penh}?
Is Phnom Penh twinned with London?
Did London twin with Phnom Penh?
ASK WHERE { resource:London property:twinned_administrative_body resource:Phnom_Penh }
 ASK { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q84> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P190> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q1850>. } 
ASK WHERE { wd:Q84 wdt:P190 wd:Q1850 }