generate questions: In September 1828 Chopin, while still a student, visited Berlin with a family friend, zoologist Feliks Jarocki, enjoying operas directed by Gaspare Spontini and attending concerts by Carl Friedrich Zelter, Felix Mendelssohn and other celebrities. On an 1829 return trip to Berlin, he was a guest of Prince Antoni Radziwiłł, governor of the Grand Duchy of Posen—himself an accomplished composer and aspiring cellist. For the prince and his pianist daughter Wanda, he composed his Introduction and Polonaise brillante in C major for cello and piano, Op. 3.
Who did Frédéric visit Berlin with in September 1828? {sep_token} Which opera director did Frédéric see works of during his stay in Berlin? {sep_token} Who was Frédéric a guest of during his stay in Berlin in 1829? {sep_token} What piece did Frédéric create specifically for the prince and the prince's daughter, Wanda? {sep_token} When did Chopin visit Berlin? {sep_token} With whom did Chopin go to Berlin? {sep_token} While in Berlin he saw the operatic work of who? {sep_token} In 1829 on a trip back to Berlin Chopin was a guest of who? {sep_token} What piece did Chopin create for Prince Antoni? {sep_token} What year did Chopin visit Berlin while still a student? {sep_token} Who did Chopin go to Berlin with? {sep_token} What did the person who Chopin went with to Berlin do for his work? {sep_token} Who directed the operas they enjoyed in Berlin? {sep_token} What year did Chopin return to Berlin? {sep_token}