Complex sentence: At the time of his retirement in 1928, money was raised by citizens and his friends to erect a new building called the Wanless Tuberculosis Sanatorium, now known as Wanless Chest Hospital.
Split into simpler sentences: At the time of his retirement in 1928 money was raised by citizens and his friends for erection of new building for Tuberculosis Sanatorium. This new Sanatorium was named as Wanless Tuberculosis Sanatorium, better known as Wanless Chest Hospital.