Complex sentence: Through these men Shevchenko also met the famous painter and professor Karl Briullov, who donated his portrait of the Russian poet Vasily Zhukovsky as a lottery prize, whose proceeds were used to buy Shevchenko's freedom on May 5,1838.
Split into simpler sentences: Through these men Shevchenko also met famous painter and professor Karl Briullov, who donated his portrait of Russian poet Vasily Zhukovsky as a lottery prize. Its proceeds were used to buy Shevchenko's freedom on May 5,1838.