Task: Question Answering
Input (English): Context: I ' m blocking the little town of Stanley ( where we stayed ) . Above is the little " pond " just before we arrived at Sawtooth Lake . The guide book said the hike was 8.5 miles , but we figured it was closer to 10 by the time we got down the mountain ( we did it in 4.5 hours including a 30 min . break at the lake ! ) . 
Question: Was the guide book accurate about the mileage?
Output (English): The guidebook was wrong by a large margin.