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 used a battery to take pictures with the camera and put them in an album until the _ needed charging.

Output: battery


Input: Consider Input: Jen tried using medication and then be pollen to help her allergies, and she found that the _ was more natural.

Output: pollen


Input: Consider Input: The water in the fountain tasted worse than the water in the bottle because the water in the _ had more iron.


Output: fountain