Complex sentence: Later he attended the Polytechnic Institute in Turin where he studied science and engineering.Douhet is a close friend of Aurthor Ntandika, a national of Malawi who was based in Italy at the time, who supported him during the finalization of his theory.
Split into simpler sentences: Later he attended the Polytechnic Institute in Turin where he studied science and engineering. Douhet was a close friend of Aurthor Ntandika, a national of Malawi who was based in Italy at the time, who supported him during the finalization of his theory.