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Chopin's original publishers included Maurice Schlesinger and Camille Pleyel. His works soon began to appear in popular 19th-century piano anthologies. The first collected edition was by Breitkopf & Härtel (1878–1902). Among modern scholarly editions of Chopin's works are the version under the name of Paderewski published between 1937 and 1966 and the more recent Polish "National Edition", edited by Jan Ekier, both of which contain detailed explanations and discussions regarding choices and sources.

Who edited the Polish "National Edition" of Chopin's works?
Answer: Jan Ekier
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Boston (pronounced i/ˈbɒstən/) is the capital and largest city of the Commonwealth of Massachusetts in the United States. Boston also served as the historic county seat of Suffolk County until Massachusetts disbanded county government in 1999. The city proper covers 48 square miles (124 km2) with an estimated population of 655,884 in 2014, making it the largest city in New England and the 24th largest city in the United States. The city is the economic and cultural anchor of a substantially larger metropolitan area called Greater Boston, home to 4.7 million people and the tenth-largest metropolitan statistical area in the country. Greater Boston as a commuting region is home to 8.1 million people, making it the sixth-largest combined statistical area in the United States.

What is the approximate population for 2014?
Answer: 655,884
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After agreeing to sign the Boxer Protocol the government then initiated unprecedented fiscal and administrative reforms, including elections, a new legal code, and abolition of the examination system. Sun Yat-sen and other revolutionaries competed with reformers such as Liang Qichao and monarchists such as Kang Youwei to transform the Qing empire into a modern nation. After the death of Empress Dowager Cixi and the Guangxu Emperor in 1908, the hardline Manchu court alienated reformers and local elites alike. Local uprisings starting on October 11, 1911 led to the Xinhai Revolution. Puyi, the last emperor, abdicated on February 12, 1912.

When did he step down?
Answer:
February 12, 1912