question: Who was the recipient of Frédéric 's letter he wrote on 12 December 1831 ?
answer: Woyciechowski
turker_answer: Woyciechowski was the recipient of Frederic 's letter he wrote on 12 December 1831 .
rule-based: The recipient of Frédéric 's letter he was wrote Woyciechowski on 12 December 1831 .