Question: Are both rivers, Portage River (Petit-Saguenay River Tributary) and Polocin, located in the same country?
Sentence (from "Portage River (Petit-Saguenay River tributary)"): The surface of the Portage River is usually frozen from the beginning of December to the end of March, however, safe ice circulation is generally from mid-December to mid-March.
Relevant evidence: No