Task: Translation
Input (Tagalog): Tagalog sentence: Siya ay nagsilbi bilang secretary mula 1919-1933, president 1933-1935 at acted bilang isang editor ng mga pamamaraan ng London matematiko Lipunan hanggang 1946.
Output (English): He served as secretary from 1919 to 1933, president from 1933 to 1935 and acted as an editor of the Proceedings of the London Mathematical Society until 1946.