Question: Mention the year span in which Tbilisi  became capital of the Tiflis County
SPARQL (Wikidata): SELECT ?value1 ?value2 WHERE { wd:Q994 p:P1376 ?s . ?s ps:P1376 wd:Q12864947 . ?s pq:P582 ?value1 . ?s pq:P580 ?value2 }