What is the first year course in the program where geometry is taken in the third year?
CREATE TABLE "table1_12148147_2" (
  "subjects" text,
  "first_year" text,
  "second_year" text,
  "third_year" text,
  "fourth_year" text
);
SELECT "first_year" FROM "table1_12148147_2" WHERE "third_year"='Geometry';