CREATE TABLE table_201_46 (id DECIMAL, "name" TEXT, "position" TEXT, "length\ [km]" DECIMAL, "drainage basin area\ [km2]" DECIMAL, "confluence\ [by lahn-km]" DECIMAL, "mouth elevation\ [m above msl]" DECIMAL)

which lahn that exceeds 300 m also has a length that exceeds 10 km ?
SELECT "name" FROM table_201_46 WHERE "mouth elevation\n[m above msl]" > 300 AND "length\n[km]" > 10
SELECT "name" FROM "table_201_46" WHERE "length\n[km]" > 10 AND "mouth elevation\n[m above msl]" > 300