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

Output: escalator


Input: Consider Input: The bike manufacturer switched its fabrication from steel to aluminium frames because the _ was lighter.

Output: aluminium


Input: Consider Input: Bob burned the skin on his arm when he spilled a chemical on it because the _ was too weak.


Output: skin