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.

Ex Input:
The essay on DNA structures was read more than the one on Proteins, so the one on _ must be more dull.

Ex Output:
Proteins


Ex Input:
As the gas filled the room, most people opted for the mask instead of the bag since the _ was efficient.

Ex Output:
mask


Ex Input:
The acorn that I ate for a snack chipped my tooth because the _ was soft.

Ex Output:

tooth