In this task, you will be presented with a context passage, a question about that paragraph, and a possible answer to that question. The task is to check the validity of the answer. Answer with "Yes" or "No".

Ex Input:
Imagine you are standing in a farm field in central Illinois. The land is so flat you can see for miles and miles. On a clear day, you might see a grain silo 20 miles away. You might think to yourself, it sure is flat around here. If you drive one hundred miles to the south, the landscape changes. In southern Illinois, there are rolling hills. Why do you think this is? What could have caused these features? There are no big rivers that may have eroded and deposited this material. The ground is capable of supporting grass and trees, so wind erosion would not explain it. To answer the question, you need to go back 12,000 years. Around 12,000 years ago, a giant ice sheet covered much of the Midwest United States. Springfield, Illinois, was covered by over a mile of ice. Its hard to imagine a mile thick sheet of ice. The massive ice sheet, called a glacier, caused the features on the land you see today. Where did glaciers go? Where can you see them today? Glaciers are masses of flowing ice. <sep>How long ago was Springfield, Illinois covered by over a mile of ice?<sep>1,200 years ago

Ex Output:
No

Ex Input:
In early March, the administration postponed action on proposals for increasing aid to the Northern Alliance and the Uzbeks. Rice noted at the time that a more wide-ranging examination of policy toward Afghanistan was needed first. She wanted the review very soon. Rice and others recalled the President saying, "I'm tired of swatting at flies." The President reportedly also said,"I'm tired of playing defense. I want to play offense. I want to take the fight to the terrorists." President Bush explained to us that he had become impatient. He apparently had heard proposals for rolling back al Qaeda but felt that catching terrorists one by one or even cell by cell was not an approach likely to succeed in the long run. At the same time, he said, he understood that policy had to be developed slowly so that diplomacy and financial and military measures could mesh with one another. Hadley convened an informal Deputies Committee meeting on March 7, when some of the deputies had not yet been confirmed. For the first time, Clarke's various proposals-for aid to the Northern Alliance and the Uzbeks and for Predator missions-went before the group that, in the Bush NSC, would do most of the policy work. Though they made no decisions on these specific proposals, Hadley apparently concluded that there should be a presidential national security policy directive (NSPD) on terrorism. Clarke would later express irritation about the deputies' insistence that a strategy for coping with al Qaeda be framed within the context of a regional policy. He doubted that the benefits would compensate for the time lost. The administration had in fact proceeded with Principals Committee meetings on topics including Iraq and Sudan without prior contextual review, and Clarke favored moving ahead similarly with a narrow counterterrorism agenda. But the President's senior advisers saw the al Qaeda problem as part of a puzzle that could not be assembled without filling in the pieces for Afghanistan and Pakistan. Rice deferred a Principals Committee meeting on al Qaeda until the deputies had developed a new policy for their consideration. <sep>What was the presidents initial response to the efforts to perform a more wide-ranging examination of policy toward Afghanistan?<sep>He wanted to go on offense

Ex Output:
Yes

Ex Input:
Here the omnibus came up, and I rode back to Manchester. The whole conversation took up very little more time than it will take to read it; but I thought it worth recording, as characteristic of the people now suffering in Lancashire from no fault of their own. I know the people well. The greatest number of them would starve themselves to that degree that they would not be of much more physical use in this world, before they would condescend to beg. But starving to death is hard work. What will winter bring to them when severe weather begins to tell upon constitutions lowered in tone by a starvation diet--a diet so different to what they have been used to when in work? What will the 1s. 6d. a-head weekly do for them in that hard time? If something more than this is not done for them, when more food, clothing, and fire are necessary to everybody, calamities may arise which will cost England a hundred times more than a sufficient relief--a relief worthy of those who are suffering, and of the nation they belong to--would have cost. In the meantime the cold wings of winter already begin to overshadow the land; and every day lost involves the lives, or the future usefulness, of thousands of our best population. <sep>Which potentially calamitous season looms over the people of Lancashire?<sep>Autumn

Ex Output:
No