You need to answer a given question containing a blank (_). Your answer must be one of the two objects mentioned in the question, for example "trophy" and "suitcase". Your answer must not contain a word that is not present in the question. Please don't use articles (e.g., the, a) before the answer.

Input: Consider Input: Preston liked learning violin better than piano at music class, because the _ hurt his back.

Output: piano


Input: Consider Input: We were making icing for the cake, vanilla and lemon, but the _ was too sour.

Output: lemon


Input: Consider Input: Matt was baking cookies using flour and butter but the cookies came out poorly because the _ was too little.


Output: flour