Task: Translation
Input (Tagalog): Tagalog sentence: Kanyang interes sa matematika dahan-dahan bumalik ngunit ito ay hindi hanggang 1909 na Luzin tila sa wakas ay may pangako sa kanyang sarili ganap na matematika.
Output (English): His interest in mathematics slowly returned but it was not until 1909 that Luzin seems to have finally committed himself completely to mathematics.