TASK DEFINITION: Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.
PROBLEM: Context: Castigliano's method, named for Carlo Alberto Castigliano, is a method for determining the displacements of a linear-elastic system based on the partial derivatives of the energy.
Question: Who was the original discoverer of Castigliano's method?

SOLUTION: carlo alberto castigliano

PROBLEM: Context: Ways to travel Modern life is impossible without travelling. The fastest way to travel is by air. With a modern plane you can travel in one day to places which took a month or more one hundred years ago. Travelling by train is slower than by air, but it has its advantages . You can see the country you are travelling in. Modern trains have comfortable seats and dining cars. They make even the longest journey enjoyable. Some people prefer to travel by sea when it is possible. There are large lines and river boats with which you can visit many other countries and different places. Travelling by sea is a very pleasant way to spend a holiday. Many people like to travel by car. You can make your own timetable. You can travel three or four hundred miles or only fifty miles a day, just as you like. You can stop wherever you wish: where there is something interesting to see, at a good restaurant where you can enjoy a good meal, or a hotel to spend the night. That is why travelling by car is popular for pleasure trips, while people usually take a train or a plane when they are travelling on business.
Question: How many ways to travel are mentioned in the passage?

SOLUTION: four

PROBLEM: Context: After the defeat of several Song armies in the north, Emperor Qinzong wanted to negotiate a truce with the Jin, but he committed a massive strategic blunder when he commanded his remaining armies to protect prefectural cities instead of Kaifeng. Neglecting the importance of the capital, he left Kaifeng defended with fewer than 100,000 soldiers. The Song forces were dispersed throughout China, powerless to stop the second Jurchen siege of the city. The Jin assault commenced in mid December 1126. Even as fighting raged on, Qinzong continued to sue for peace, but Jin demands for territory were enormous: they wanted all provinces north of the Yellow River. After more than twenty days of heavy combat against the besieging forces, Song defenses were decimated and the morale of Song soldiers was on the decline. On January 9, 1127, the Jurchens broke through and started to loot the conquered city. Emperor Qinzong tried to appease the victors by offering the remaining wealth of the capital. The royal treasury was emptied and the belongings of the city's residents were seized. The Song emperor offered his unconditional surrender a few days later. Qinzong, the former emperor Huizong, and members of the Song court were captured by the Jurchens as hostages. They were taken north to Huining , where they were stripped of their royal privileges and reduced to commoners. The former emperors were humiliated by their captors. They were mocked with disparaging titles like "Muddled Virtue" and "Double Muddled". In 1128 the Jin made them perform a ritual meant for war criminals. The harsh treatment of the Song royalty softened after the death of Huizong in 1135. Titles were granted to the deceased monarch, and his son Qinzong was promoted to Duke, a position with a salary.
Question: Which happened first, the seizing of the resident's belongings to give to the Jin, or unconditional surrender of the Song emperor?

SOLUTION:
belongings of the city's residents