what is the {start time} for {Nicolás Maduro} has {position held} as {Secretary General of the Non-Aligned Movement} ?
At which point in time did Nicolás Maduro start as Secretary General of the Non-Aligned Movement?
When did Nicolás Maduro start as Secretary General of the Non-Aligned Movement?
SELECT ?y WHERE { resource:Nicolás_Maduro property:position_held ?v . ?v property:position_held resource:Secretary_General_of_the_Non-Aligned_Movement . ?v property:start_time ?y }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q58132> .
?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/Q15647601> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q58132 p:P39 ?s . ?s ps:P39 wd:Q15647601 . ?s pq:P580 ?value}