Input: Read this: From 1879, Watch Tower supporters gathered as autonomous congregations to study the Bible topically. Thirty congregations were founded, and during 1879 and 1880, Russell visited each to provide the format he recommended for conducting meetings. As congregations continued to form during Russell's ministry, they each remained self-administrative, functioning under the congregationalist style of church governance. In 1881, Zion's Watch Tower Tract Society was presided over by William Henry Conley, and in 1884, Charles Taze Russell incorporated the society as a non-profit business to distribute tracts and Bibles. By about 1900, Russell had organized thousands of part- and full-time colporteurs, and was appointing foreign missionaries and establishing branch offices. By the 1910s, Russell's organization maintained nearly a hundred "pilgrims," or traveling preachers. Russell engaged in significant global publishing efforts during his ministry, and by 1912, he was the most distributed Christian author in the United States.
Question: What did the congregations which continued to form during Russell's ministry remain?

Output: self-administrative


Input: Read this: In March 2008, it was announced that Avicenna's name would be used for new Directories of education institutions for health care professionals, worldwide. The Avicenna Directories will list universities and schools where doctors, public health practitioners, pharmacists and others, are educated. The project team stated "Why Avicenna? Avicenna ... was ... noted for his synthesis of knowledge from both east and west. He has had a lasting influence on the development of medicine and health sciences. The use of Avicenna's name symbolises the worldwide partnership that is needed for the promotion of health services of high quality."
Question: What was Avicenna not known for?

Output: unanswerable


Input: Read this: British empiricism, though it was not a term used at the time, derives from the 17th century period of early modern philosophy and modern science. The term became useful in order to describe differences perceived between two of its founders Francis Bacon, described as empiricist, and René Descartes, who is described as a rationalist. Thomas Hobbes and Baruch Spinoza, in the next generation, are often also described as an empiricist and a rationalist respectively. John Locke, George Berkeley, and David Hume were the primary exponents of empiricism in the 18th century Enlightenment, with Locke being the person who is normally known as the founder of empiricism as such.
Question: Who was the founder of rationalism?

Output: unanswerable


Input: Read this: Trading companies became active in Tuvalu in the mid-19th century; the trading companies engaged palagi traders who lived on the islands. John (also known as Jack) O'Brien was the first European to settle in Tuvalu, he became a trader on Funafuti in the 1850s. He married Salai, the daughter of the paramount chief of Funafuti. Louis Becke, who later found success as a writer, was a trader on Nanumanga from April 1880 until the trading-station was destroyed later that year in a cyclone. He then became a trader on Nukufetau.
Question: In what century did trading companies arrive in Tuvalu?

Output:
mid-19th