what is the {start time} for {Lombardy} has {country} as {Kingdom of Italy} ?
What year did Lombardy begin being called The Kingdom of Italy?
When did Lombardy become known as the Kingdom of Italy?
SELECT ?i WHERE { resource:Lombardy property:country ?c . ?c property:country resource:Kingdom_of_Italy . ?c property:start_time ?i }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1210> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P17> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q172579> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q1210 p:P17 ?s . ?s ps:P17 wd:Q172579 . ?s pq:P580 ?value}