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: As the gas filled the room, most people opted for the mask instead of the bag since the _ was efficient.

A: mask
****
Q: The man said little about the bridges he saw, but talked for hours about the cathedrals, because he was passionate about the _ .

A: cathedrals
****
Q: James got tired faster when running on the street than when running in the walkway because the _ is longer.

A:
street
****