This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

[EX Q]: Passage: In military affairs, the use of infantry with specialised roles increased. Along with the still-dominant heavy cavalry, armies often included mounted and infantry crossbowmen, as well as sappers and engineers. Crossbows, which had been known in Late Antiquity, increased in use partly because of the increase in siege warfare in the 10th and 11th centuries.[AB] The increasing use of crossbows during the 12th and 13th centuries led to the use of closed-face helmets, heavy body armour, as well as horse armour. Gunpowder was known in Europe by the mid-13th century with a recorded use in European warfare by the English against the Scots in 1304, although it was merely used as an explosive and not as a weapon. Cannon were being used for sieges in the 1320s, and hand-held guns were in use by the 1360s. Question: What led to the increased use of armor in the 12th century?
[EX A]: The increasing use of crossbows

[EX Q]: Passage: Finance proved a major problem for the Labour Party during this period; a "cash for peerages" scandal under Blair resulted in the drying up of many major sources of donations. Declining party membership, partially due to the reduction of activists' influence upon policy-making under the reforms of Neil Kinnock and Blair, also contributed to financial problems. Between January and March 2008, the Labour Party received just over £3 million in donations and were £17 million in debt; compared to the Conservatives' £6 million in donations and £12 million in debt. Question: How far was the Conservative party in debt?
[EX A]: £12 million

[EX Q]: Passage: Alexandra was born days before Kerry began law school. In 1982, Julia asked Kerry for a separation while she was suffering from severe depression. They were divorced on July 25, 1988, and the marriage was formally annulled in 1997. "After 14 years as a political wife, I associated politics only with anger, fear and loneliness" she wrote in A Change of Heart, her book about depression. Thorne later married Richard Charlesworth, an architect, and moved to Bozeman, Montana, where she became active in local environmental groups such as the Greater Yellowstone Coalition. Thorne supported Kerry's 2004 presidential run. She died of cancer on April 27, 2006. Question: When did Kerry and his wife get an annullment?
[EX A]:
1997