Question: The James River provides the main drainage between two plateau regions, the large plateau on the eastern side and which other plateau?
Sentence (from "California Plateau"): It was mapped by the United States Geological Survey from ground surveys and from U.S. Navy aerial photography, 1960–64, and named by the Advisory Committee on Antarctic Names for the several branches of the University of California which have sent numerous researchers to work in Antarctica.
Relevant evidence: No