Complex sentence: The first full-time physician was assigned to Duck Valley in 1882, and by 1897 a small one-room infirmary hospital was built and was replaced by 1920 with a structure which had two seven-bed wards.
Split into simpler sentences: The first full-time physician was assigned to Duck Valley in 1882. It was replaced by 1920 with a structure which had two seven-bed wards.