what is the {start time} for {Italy} has {head of government} as {Alcide De Gasperi} ?
On what date did Alcide De Gasperi take on his role as the head of the Italian government?
When did Alcide De Gasperi take on his role as the head of the Italian government?
SELECT ?g WHERE { resource:Italy property:head_of_government ?f . ?f property:start_time ?g . ?f property:head_of_government resource:Alcide_De_Gasperi }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q38> .
?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/Q153832> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q38 p:P6 ?s . ?s ps:P6 wd:Q153832 . ?s pq:P580 ?value}