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:
What part of an insect's internal organs is chambered?, Context: Insect respiration is accomplished without lungs. Instead, the insect respiratory system uses a system of internal tubes and sacs through which gases either diffuse or are actively pumped, delivering oxygen directly to tissues that need it via their trachea (element 8 in numbered diagram). Since oxygen is delivered directly, the circulatory system is not used to carry oxygen, and is therefore greatly reduced. The insect circulatory system has no veins or arteries, and instead consists of little more than a single, perforated dorsal tube which pulses peristaltically. Toward the thorax, the dorsal tube (element 14) divides into chambers and acts like the insect's heart. The opposite end of the dorsal tube is like the aorta of the insect circulating the hemolymph, arthropods' fluid analog of blood, inside the body cavity.:61–65 Air is taken in through openings on the sides of the abdomen called spiracles.
answer:
dorsal tube


question:
Who gets to play in the renovated stadium all the time?, Context: KU football dates from 1890, and has played in the Orange Bowl three times: 1948, 1968, and 2008. They are currently coached by David Beaty, who was hired in 2014. In 2008, under the leadership of Mark Mangino, the #7 Jayhawks emerged victorious in their first BCS bowl game, the FedEx Orange Bowl, with a 24–21 victory over the #3 Virginia Tech Hokies. This capstone victory marked the end of the most successful season in school history, in which the Jayhawks went 12–1 (.923). The team plays at Memorial Stadium, which recently underwent a $31 million renovation to add the Anderson Family Football Complex, adding a football practice facility adjacent to the stadium complete with indoor partial practice field, weight room, and new locker room.
answer:

the Jayhawks