question: In 1829 on a trip back to Berlin Chopin was a guest of who ?
answer: Prince Antoni Radziwiłł
turker_answer: In 1829 on a trip back to Berlin , Chopin was a guest of Prince Antoni Radziwiłł .
rule-based: In 1829 on a trip back to Berlin Chopin was a guest of Prince Antoni Radziwiłł .