Question: Are Ludza River and Vàm Cỏ Đông River both located in the same country?
Sentence (from "Ludza River"): The Ludza(" Lzha") is a long river in Ludza, Cibla, and Kārsava municipalities of Latvia and in Krasnogorodsky and Pytalovsky Districts of Pskov Oblast of Russia.
Relevant evidence: Yes