Question: Are both rivers, Marombas River and Koyukuk River, located in the same country?
Sentence (from "Koyukuk River"): The Koyukuk River''( Ooghekuhno in Koyukon, Kuuyukaq in Inupiaq) is a tributary of the Yukon River, in the U.S. state of Alaska.
Relevant evidence: Yes