what is the {start time} for {Ahmed III} has {position held} as {sultan of the Ottoman Empire} ?
When did Ahmed III become a sultan of Ottoman Empire?
When was Ahmed III made as sultan of Ottomon Empire?
SELECT ?j WHERE { resource:Ahmed_III property:position_held ?r . ?r property:position_held resource:sultan_of_the_Ottoman_Empire . ?r property:start_time ?j }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q199482> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P39> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q15315411> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q199482 p:P39 ?s . ?s ps:P39 wd:Q15315411 . ?s pq:P580 ?value}