Question: In which enclaved microstate did voters pass two referendums on 29 October 2013?
Sentence (from "San Marino"): San Marino ( ; ] ), officially the Republic of San Marino (Italian: "Repubblica di San Marino" ), also known as the Most Serene Republic of San Marino (Italian: "Serenissima Repubblica di San Marino" ), is an enclaved microstate surrounded by Italy, situated on the Italian Peninsula on the northeastern side of the Apennine Mountains.
Relevant evidence: Yes