context: The first mention in written sources sometimes, following the "History of the City Vilno" (, 1836-1837) of the Polish historian Michal Balinsky, is a description of a 12th-century trip by Snorri Sturluson, in which Vilnius is allegedly mentioned in the form [1] [ 2].
question: What was Vilnius called in 1920?
answers.text: Vilno