Complex sentence: Prince Nikolai Vasilyevich Repnin (1734-1801) was a Russian statesman and general from the Repnin princely family best known for his role in the downfall of Polish statehood.
Split into simpler sentences: Prince Nikolai Vasilyevich Repnin (1734-1801) was a Russian statesman and general from the Repnin princely family. He is best known for his key role in the downfall of Polish statehood.