Task: Question Answering
Input (English): passage: Since the early months of 2017, parts of South Sudan have been experiencing a famine following several years of instability in the country's food supply caused by war and drought. The famine, largely focused in the northern part of the country, has been estimated to affect almost five million people (about 50% of the South Sudanese population), with food shortages expected to spread by the middle of the year.
 question: was drought an important cause of the recent famine in south sudan?
Output (English): Yes