what is the {start time} for {Emilia-Romagna} has {head of government} as {Pier Luigi Bersani} ?
In which year Pier Luigi Bersani headed the first profile for the government of Emilia-Romagna?
When was Pier Luigi Bersani first elected head of the government of Emilia-Romagna?
SELECT ?m WHERE { ?i property:start_time ?m . ?i property:head_of_government resource:Pier_Luigi_Bersani . resource:Emilia-Romagna property:head_of_government ?i }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1263> .
?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/Q47556> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q1263 p:P6 ?s . ?s ps:P6 wd:Q47556 . ?s pq:P580 ?value}