Complex sentence: Lizzie Gottlieb, a film director, and Niccolò (Nicky), who has Asperger's Syndrome and is the subject of one of his sister's documentary film "Today's Man".
Split into simpler sentences: Lizzie Gottlieb, a film director, and Niccolò (Nicky). Nicky has Asperger syndrome and is the subject of one of his sister's documentary film "Today's Man".