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.
Q: Sentence: A supervolcano that may have killed all but 10,000 humans resulted in volcanic winter phenomenon, lasting up to a decade. Question: A supervolcano that may have killed all but 10,000 humans resulted in what phenomenon, lasting up to a decade?
A:
volcanic winter