question: What two activities did Frédéric do while visiting for a day in Düsseldorf with Mendelssohn and Hiller ?
answer: playing and discussing music
turker_answer: Frédéric was playing and discussing music while visiting for a day in Düsseldorf with Mendelssohn and Hiller .
rule-based: Frédéric played and discussed music while visiting for a day in Düsseldorf with Mendelssohn and Hiller .