Complex sentence: Sigurd Lewerentz (29 July 1885 Sandö, Sweden-29 December 1975 Lund, Sweden) was an architect, initially trained as a mechanical engineer at the Chalmers University of Technology in Gothenburg (1905--8).
Split into simpler sentences: Sigurd Lewerentz (29 July 1885 Sandö, Sweden-29 December 1975 Lund, Sweden). He was an architect, but initially trained as a mechanical engineer at the Chalmers University of Technology in Gothenburg (1905--8).