what is the {start time} for {Charles the Fat} has {noble title} as {king of Aquitaine} ?
On what date did Charles the Fat received the noble title of King of Aquitane?
When did Charles the Fat get the noble title as King of Aquitane?
SELECT ?j WHERE { ?x property:noble_title resource:king_of_Aquitaine . resource:Charles_the_Fat property:noble_title ?x . ?x property:start_time ?j }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q150712> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P97> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q23931012> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q150712 p:P97 ?s . ?s ps:P97 wd:Q23931012 . ?s pq:P580 ?value}