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: I always did well in that topic, but I alway struggled in the other subject, because the _ was a lot easier.

Output: topic


Input: Consider Input: Melanie would go sleepwalking when sleeping. The doctor prescribed pills. The _ was stressful for Melanie.

Output: sleeping


Input: Consider Input: ObjectX is a pen and ObjectY is a  special pencil, last week they thought he cheated on the test, he didnt because he used  _ to solve it.


Output: pen