Assertion: chinook's river | /r/HasProperty | ″big river″
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Source sentences:
text: Chinookan-speaking peoples reside along the Lower and Middle Columbia River (Wimahl) (″Big River″) from the river's gorge (near the present town of The Dalles, Oregon) downstream (west) to the river's mouth, and along adjacent portions of the coasts, from Tillamook Head of present-day Oregon in the south, north to Willapa Bay in southwest Washington.