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
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Q: I decided to take the lift and not the escalator because the _ looked dirtier.

A: escalator
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Q: My friend's room is decorated with both caterpillars and butterflies.  I prefer the butterflies because the _ are ugly.

A:
caterpillars
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