Complex sentence: Academy of Learning (AU) was a primary Polish scientific institution during the annexation of Poland founded in 1871 in Kraków and formed as a continuation of the Kraków Scientific Society ("Towarzystwo Naukowe Krakowskie").
Split into simpler sentences: Academy of Learning (AU) was a primary Polish scientific institution during the annexation of Poland founded in 1871. It was formed in Kraków as a continuation of the "Kraków Scientific Society" ("Towarzystwo Naukowe Krakowskie").