Complex sentence: During a nine-month period in 1842--43, Ada Lovelace translated the memoir of Italian mathematician Luigi Menabrea about Charles Babbage's newest proposed machine, the Analytical Engine.
Split into simpler sentences: During a nine-month period in 1842--43, Ada Lovelace translated the memoir of Italian mathematician Luigi Menabrea. The memoir covered Charles Babbage's newest proposed machine, the Analytical Engine.