question: What did Frédéric compose after hearing Niccolò Paganini perform on the violin ?
answer: Souvenir de Paganini
turker_answer: After Frédéric heard Niccolò Paganini perform on the violin , he composed the Souvenir de Paganini .
rule-based: Frédéric composed Souvenir de Paganini after hearing Niccolò Paganini perform on the violin .