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 bag was used to collect some water and emptied to the pot but to out disappointment we met nothing in the pot. The _ is  watertight.

Ex Output:
bag


Ex Input:
Bill got a new king sized mattress but had to throw out his old queen bed frame because the _ was larger.

Ex Output:
mattress


Ex Input:
It was easier to deal with the new car than the new job because the _ was a bigger change.

Ex Output:

job