Complex sentence: The present building of the chapel was built in 1900-1901, designed as a residential villa belonging to Adolf and Emil Kolwitz, a famous Prussian merchant, The Kolwitz family had a charitable foundation that helped supporting Diakonisek Hospital in Poznań.
Split into simpler sentences: The present building of the chapel was built in 1900-1901, designed as a residential villa belonging to Adolf and Emil Kolwitz. The Kolwitzs' were a notable Prussian merchant who had had a charitable foundation that helped supporting Diakonisek Hospital in Poznań.