generate questions: Chopin has figured extensively in Polish literature, both in serious critical studies of his life and music and in fictional treatments. The earliest manifestation was probably an 1830 sonnet on Chopin by Leon Ulrich. French writers on Chopin (apart from Sand) have included Marcel Proust and André Gide; and he has also featured in works of Gottfried Benn and Boris Pasternak. There are numerous biographies of Chopin in English (see bibliography for some of these).
An 1830 sonnet was written about Chopin by what man? {sep_token} Aside from George Sands what two French authors have written about Chopin? {sep_token} Leon Ulrich wrote about Chopin in what format? {sep_token} What is the earliest sighting of Chopin in Polish Literature? {sep_token} When did Ulrich do his sonnet on Chopin? {sep_token} In addition to Polish and French, what other language has numerous biogrpahies of Chopin? {sep_token}