What is {position held} of {Iván Duque Márquez} that is {end time} is {2018-4-10} ?
What position does Iván Duque Márquez hold at 2018-4-10?
SELECT ?obj WHERE { wd:Q17478000 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'2018')) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q17478000> .
?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> ?obj .
?statement <http://www.wikidata.org/entity/P582> <2018-4-10>
} 

Tell me the position Iván Duque Márquez holds on 2018-4-10.