Complex sentence: Witold Pilecki was born on May 13,1901 in the town of Olonets, Karelia in the Russian Empire to a Polish noble family (szlachta) originally from the city of Navahrudak.
Split into simpler sentences: Witold Pilecki was born on May 13,1901 in the town of Olonets, Karelia in the Russian Empire. He was a member of a Polish noble family (szlachta) originally from the city of Navahrudak.