Question: The daily newspaper, laRegioneTicino is based in a city famous for its three castles that have been UNESCO World Heritage Sites since what year?
Sentence (from "Bellinzona"): Bellinzona (] ; French: "Bellinzone" ] , German: "Bellenz" ] , Romansh: "Blizuna" ] ) is the capital of the canton Ticino in Switzerland.
Relevant evidence: No