Question: Finland won the first Eurovision Dance Contest in 2007, in 2008, Finland were represented by singer and actress Maria Lund, and dancer Mikko Ahti, danced a Tango,a Tango is a partner dance, that originated in the 1880s, along which location, the natural border between Argentina and Uruguay?
Sentence (from "Russia in the Eurovision Dance Contest"): The Third Eurovision Dance Contest has been cancelled indefinitely.
Relevant evidence: No