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]: The girl was late to class in school and had to take the bus but the _ was early.
[A]: bus


[Q]: She had a lower back pain but her headache was gone, so the _ problem was comforting her now.
[A]: headache


[Q]: Jane could not see the top of the shelf even after standing on the couch. The _ is very short.
[A]:
couch