instruction:
In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
question:
How does a chestnut tree form its heartwood?, Context: The term heartwood derives solely from its position and not from any vital importance to the tree. This is evidenced by the fact that a tree can thrive with its heart completely decayed. Some species begin to form heartwood very early in life, so having only a thin layer of live sapwood, while in others the change comes slowly. Thin sapwood is characteristic of such species as chestnut, black locust, mulberry, osage-orange, and sassafras, while in maple, ash, hickory, hackberry, beech, and pine, thick sapwood is the rule. Others never form heartwood.
answer:
the change comes slowly


question:
Under what kind of model is Swaziland governed?, Context: At no more than 200 kilometres (120 mi) north to south and 130 kilometres (81 mi) east to west, Swaziland is one of the smallest countries in Africa. Despite its size, however, its climate and topography is diverse, ranging from a cool and mountainous highveld to a hot and dry lowveld. The population is primarily ethnic Swazis whose language is siSwati. They established their kingdom in the mid-18th century under the leadership of Ngwane III; the present boundaries were drawn up in 1881. After the Anglo-Boer War, Swaziland was a British protectorate from 1903 until 1967. It regained its independence on 6 September 1968.
answer:
kingdom


question:
Which media outlet sold more daily copies in 2005, The Times or The Daily Telegraph?, Context: At the time of Harold Evans' appointment as editor in 1981, The Times had an average daily sale of 282,000 copies in comparison to the 1.4 million daily sales of its traditional rival The Daily Telegraph. By November 2005 The Times sold an average of 691,283 copies per day, the second-highest of any British "quality" newspaper (after The Daily Telegraph, which had a circulation of 903,405 copies in the period), and the highest in terms of full-rate sales. By March 2014, average daily circulation of The Times had fallen to 394,448 copies, compared to The Daily Telegraph's 523,048, with the two retaining respectively the second-highest and highest circulations among British "quality" newspapers. In contrast The Sun, the highest-selling "tabloid" daily newspaper in the United Kingdom, sold an average of 2,069,809 copies in March 2014, and the Daily Mail, the highest-selling "middle market" British daily newspaper, sold an average of 1,708,006 copies in the period.
answer:

The Daily Telegraph