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 pine trees were still green in December, but the oak trees were not, because the _ keep their leaves in fall.
answer:
pine trees


question:
The computer was stumped by the algorithm but solved the equation with ease, as the _ was so complex.
answer:
algorithm


question:
I always did well in that topic, but I alway struggled in the other subject, because the _ was a lot easier.
answer:

topic


