what is the {start time} for {Tenzin Gyatso} has {country of citizenship} as {People's Republic of China} ?
How long has Tenzin Gyatso been a citizen at People's Republic of China?
Since what time, Tenzin Gyatso has citizenship at People's Republic of China?
SELECT ?d WHERE { resource:Tenzin_Gyatso property:country_of_citizenship ?o . ?o property:start_time ?d . ?o property:country_of_citizenship resource:People's_Republic_of_China }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q17293> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P27> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q148> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q17293 p:P27 ?s . ?s ps:P27 wd:Q148 . ?s pq:P580 ?value}