Q: I know that the answer to the question "How does a chestnut tree form its heartwood?" is in "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.". Can you tell me what it is?
A: the change comes slowly

Q: I know that the answer to the question "What in the ancient cities/countries influenced Johann Joachim Winckelmann's writings?" is in "By the mid 18th century, the movement broadened to incorporate a greater range of Classical influences, including those from Ancient Greece. The shift to neoclassical architecture is conventionally dated to the 1750s. It first gained influence in England and France; in England, Sir William Hamilton's excavations at Pompeii and other sites, the influence of the Grand Tour and the work of William Chambers and Robert Adam, was pivotal in this regard. In France, the movement was propelled by a generation of French art students trained in Rome, and was influenced by the writings of Johann Joachim Winckelmann. The style was also adopted by progressive circles in other countries such as Sweden and Russia.". Can you tell me what it is?
A: architecture

Q: I know that the answer to the question "He encouraged the Dominicans to study the study of language?" is in "Humbert of Romans, the master general of the order from 1254 to 1263, was a great administrator, as well as preacher and writer. It was under his tenure as master general that the sisters in the order were given official membership. Humbert was a great lover of languages, and encouraged linguistic studies among the Dominicans, primarily Arabic, because of the missionary work friars were pursuing amongst those led astray or forced to convert by Muslims in the Middle East. He also wanted his friars to reach excellence in their preaching, and this was his most lasting contribution to the order. The growth of the spirituality of young preachers was his first priority. He once cried to his students: "... consider how excellent this office [of preaching] is, because it is apostolic; how useful, because it is directly ordained for the salvation of souls; how perilous, because few have in them, or perform, what the office requires, for it is not without great danger ... , vol. xxv. (Lyon, 1677)". Can you tell me what it is?
A: Humbert of Romans

Q: I know that the answer to the question "What state in America has a connection with the Presbyterian churches of Africa?" is in "African Presbyterian churches often incorporate diaconal ministries, including social services, emergency relief, and the operation of mission hospitals. A number of partnerships exist between presbyteries in Africa and the PC(USA), including specific connections with Lesotho, Malawi, South Africa, Ghana and Zambia. For example, the Lackawanna Presbytery, located in Northeastern Pennsylvania, has a partnership with a presbytery in Ghana. Also the Southminster Presbyterian Church, located near Pittsburgh, has partnerships with churches in Malawi and Kenya. The Presbyterian Church of Nigeria, western Africa is also healthy and strong in mostly the southern states of this nation, strong density in the south-eastern states of this country. Beginning from Cross River state, the nearby coastal states, Rivers state, Lagos state to Ebonyi and Abia States. The missionary expedition of Mary Slessor and Hope Waddel and their group in the mid 18th century in this coastal regions of the ten British colony has brought about the beginning and the flourishing of this church in these areas.". Can you tell me what it is?
A:
Pennsylvania