Name the vertical for 明勾（ys月南）
CREATE TABLE "triangles_and_their_sides" (
  "number" real,
  "name" text,
  "vertices" text,
  "hypotenuse_0_c" text,
  "vertical_0_b" text,
  "horizontal_0_a" text
);
SELECT "vertical_0_b" FROM "triangles_and_their_sides" WHERE "horizontal_0_a"='明勾（YS月南）';