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

Output: sleeping


Input: Consider Input: The plane couldn't handle the wind as well as the helicopter, as the _ was rugged against the weather.

Output: helicopter


Input: Consider Input: The thermostat started giving bad readings, so we checked the batteries and for a new one.  We were able to just replace the _ .


Output: batteries