Who is the week 12 for the week 4 of Gerard Ewelina?
CREATE TABLE "nominations" (
  "week_2" text,
  "week_4" text,
  "week_6" text,
  "week_11" text,
  "week_12" text,
  "week_13" text,
  "week_15" text
);
SELECT "week_12" FROM "nominations" WHERE "week_4"='gerard ewelina';