CREATE TABLE table_63625 ("Rank" FLOAT, "Canton" CLOB, "Highest point" CLOB, "Highest elevation" CLOB, "Lowest point" CLOB, "Lowest elevation" CLOB)

What is the highest elevation of a place where the lowest point is the Allaine River, National border?
SELECT "Highest elevation" FROM table_63625 WHERE "Lowest point" = 'allaine river, national border'
SELECT "Highest elevation" FROM "table_63625" WHERE "Lowest point" = 'allaine river, national border'