CREATE TABLE "table1_12148147_2" (
  "subjects" text,
  "first_year" text,
  "second_year" text,
  "third_year" text,
  "fourth_year" text
);

Question: What is the third year course in science?
SQL: SELECT "third_year" FROM "table1_12148147_2" WHERE "subjects"='Science';

Question: What is the second year class following pag-unawa?
SQL: SELECT "second_year" FROM "table1_12148147_2" WHERE "first_year"='Pag-unawa';

Question: How many classes are taken in the third year when pag-unawa was taken in the first year?
SQL: SELECT COUNT("third_year") FROM "table1_12148147_2" WHERE "first_year"='Pag-unawa';

Question: What is the first year course in the program where geometry is taken in the third year?
SQL: SELECT "first_year" FROM "table1_12148147_2" WHERE "third_year"='Geometry';

Question: What is the second year course in the program where physics is taken in the fourth year?
SQL: SELECT "second_year" FROM "table1_12148147_2" WHERE "fourth_year"='Physics';