Input: Article: The first half of the 20th century in Russia and the Soviet Union was marked by a succession of wars, famines and other disasters, each accompanied by large-scale population losses. Stephen J. Lee estimates that, by the end of World War II in 1945, the Russian population was about 90 million fewer than it could have been otherwise.

Now answer this question: When was the Russian population estimated to be about 90 million fewer than it could have been?

Output: 1945

Input: Article: Madonna's popularity was further enhanced by her film roles, including Desperately Seeking Susan (1985), Dick Tracy (1990), and Evita (1996); the latter earned her a Golden Globe Award for Best Actress. However, most of her other films have been panned by critics. Her other ventures include fashion design, writing children's books, and filmmaking. She has been acclaimed as a businesswoman, particularly after she founded entertainment company Maverick (including the label Maverick Records). In 2007 she signed an unprecedented US $120 million 360 deal with Live Nation.

Now answer this question: Name one of Madonna's other business ventures?

Output: fashion design

Input: Article: Chopin was educated in the tradition of Beethoven, Haydn, Mozart and Clementi; he used Clementi's piano method with his own students. He was also influenced by Hummel's development of virtuoso, yet Mozartian, piano technique. He cited Bach and Mozart as the two most important composers in shaping his musical outlook. Chopin's early works are in the style of the "brilliant" keyboard pieces of his era as exemplified by the works of Ignaz Moscheles, Friedrich Kalkbrenner, and others. Less direct in the earlier period are the influences of Polish folk music and of Italian opera. Much of what became his typical style of ornamentation (for example, his fioriture) is taken from singing. His melodic lines were increasingly reminiscent of the modes and features of the music of his native country, such as drones.

Now answer this question: Chopin looked to Beethoven, Mozart, Clementi and who for his own music education?

Output:
Haydn