I want to know the answer to the following question:
What year did Frédéric leave Warsaw after moving with his family to the south annex of Krasiński Palace?
All the background I'm provided with is that "Here his parents continued running their boarding house for male students; the Chopin Family Parlour (Salonik Chopinów) became a museum in the 20th century.". Is that enough to answer the question?