Complex sentence: The Isotta Fraschini Tipo 8 is an automobile introduced in 1919 by Isotta Fraschini, a company which underwent a complete change after World War I. Until that time building a wide variety of models, the company adopted a single-series policy.
Split into simpler sentences: The Isotta Fraschini Tipo 8 is an automobile introduced in 1919 by Isotta Fraschini. The Tipo 8 was introduced in 1919 and Isotta-Fraschini had underwent a complete change after World War I. Until that time building a wide variety of models, the company adopted a single-series policy.