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.

[Q]: A cough rose from Chad's lungs because the _ was afflicted by the serious sickness.
[A]: lung


[Q]: Jenna added chlorine gradually to her pool, because she wanted to make sure that the _ was making it cleaner.
[A]: chlorine


[Q]: Amy used a whipstitch to sew the pelts together with cotton thread instead of nylon thread because the _ is less manageable.
[A]:
nylon thread