what is the {start time} for {Konstantin Rokossovsky} has {military rank} as {Komdiv} ?
At what point did Konstantin Rokossovsky receive the Komdiv military rank?
When did Konstantin Rokossovsky start bearing the military rank of Komdiv?
SELECT ?l WHERE { ?s property:start_time ?l . ?s property:military_rank resource:Komdiv . resource:Konstantin_Rokossovsky property:military_rank ?s }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q40482> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P410> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q2618052> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q40482 p:P410 ?s . ?s ps:P410 wd:Q2618052 . ?s pq:P580 ?value}