What is {work period (start)} and {work period (end)} of {{Seattle} has {head of government} as {Arthur B. Langlie}}
When was Arthur B. Langlie Mayor of Seattle?
What are the beginning and end dates of the administration of Arthur B. Langlie as Mayor of Seattle?
SELECT ?z ?i WHERE { resource:Seattle property:head_of_government ?a . ?a property:work_period_(start) ?z . ?a property:work_period_(end) ?i . ?a property:head_of_government resource:Arthur_B._Langlie }
select distinct ?value1 ?value2 where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q5083> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P6> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q371494>. ?statement <http://www.wikidata.org/entity/P580> ?value1 . ?statement <http://www.wikidata.org/entity/P2842> ?value2 } 
SELECT ?value1 ?value2 WHERE { wd:Q5083 p:P6 ?s . ?s ps:P6 wd:Q371494 . ?s pq:P2031 ?value1 . ?s pq:P2032 ?value2 }