question: Chopin 's ability to create an advanced polonasises surpassed even two of his teachers , Zywny and who ?
answer: Elsner
turker_answer: Chopin 's ability to create an advanced polonasises surpassed even two of his teachers , Zywny and Elsner .
rule-based: Chopin 's ability to create an advanced polonasises surpassed even two of his teachers , Zywny and Elsner .