In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

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.
the change comes slowly

What does she do outside of show business?, Context: Madonna Louise Ciccone (/tkoni/; Italian: [tikkone]; born August 16, 1958) is an American singer, songwriter, actress, and businesswoman. She achieved popularity by pushing the boundaries of lyrical content in mainstream popular music and imagery in her music videos, which became a fixture on MTV. Madonna is known for reinventing both her music and image, and for maintaining her autonomy within the recording industry. Music critics have acclaimed her musical productions, which have generated some controversy. Often referred to as the "Queen of Pop", she is often cited as an influence by other artists.
businesswoman

If one wants to look at books in the Wall House where should one visit within?, Context: Musee Territorial de St.-Barthelemy is a historical museum known as the "St. Barts Municipal Museum" also called the "Wall House" (musee bibliotheque) in Gustavia, which is located on the far end of La Pointe. The museum is housed in an old stone house, a two-storey building which has been refurbished. The island's history relating to French, Swedish and British period of occupation is well presented in the museum with photographs, maps and paintings. Also on display are the ancestral costumes, antique tools, models of Creole houses and ancient fishing boats. It also houses a library.
library