what is the {end time} for {Rhineland-Palatinate} has {head of government} as {Helmut Kohl} ?
When did Rhineland-Palatinate Helmut Kohl end?
What is the { end time } for { Rhineland - Palatinate } like { Helmut Kohl }?
SELECT ?i WHERE { ?y property:head_of_government resource:Helmut_Kohl . resource:Rhineland-Palatinate property:head_of_government ?y . ?y property:end_time ?i }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1200> .
?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/Q2518> .
?statement <http://www.wikidata.org/entity/P582> ?value. 
} 

SELECT ?value WHERE { wd:Q1200 p:P6 ?s . ?s ps:P6 wd:Q2518 . ?s pq:P582 ?value}