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:
Jeffrey stole copper pipes and wires from the junkyard to sell, and he found the _ were more expensive to sell.

Ex Output:
pipes


Ex Input:
The horse ran faster on the track than in the field because the _ was more slippery.

Ex Output:
field


Ex Input:
He laid a rubber mat down on the concrete driveway while working on his car since the surface of the _ is hard.

Ex Output:

concrete