In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.

Example Input: Sentence: Solar and wind are still expensive compared to fossil fuels. Question: Solar and wind are still expensive compared to what?
Example Output: fossil fuels

Example Input: Sentence: Clear mucus is secreted before ejaculation to neutralize acidic urine remaining in the urethra. Question: What is secreted before ejaculation to neutralize acidic urine remaining in the urethra?
Example Output: clear mucus

Example Input: Sentence: The earth's magnetic poles have switched places repeatedly in the past. Question: The earth's magnetic poles have done what repeatedly in the past?
Example Output:
switched places