Complex sentence: Stadio Danilo Martelli is the main stadium in Mantua, Italy, named after a Mantuan footballer from the 40's, who died in the Superga air disaster that claimed the lives of the whole Turin football team in 1949.
Split into simpler sentences: Stadio Danilo Martelli is the main stadium in Mantua, Italy. It is named after a Mantuan footballer from the 40's, who died in the Superga air disaster that claimed the lives of the whole Turin football team in 1949.