instruction:
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.
question:
The planted tree cannot form the shade for the fence yet because the _ is shorter.
answer:
tree


question:
The weightlifter felt a lot more tough when working with barbells than with kettlebells, because the _ worked more complex muscle groups.
answer:
barbells


question:
Al got a course certification instead of a university degree as his professional credential because getting a _ was expensive.
answer:

degree