Problem: On the Origin of Species:

In Chapter II, Darwin specifies that the distinction between species and varieties is arbitrary, with experts disagreeing and changing their decisions when new forms were found. He concludes that "a well-marked variety may be justly called an incipient species" and that "species are only strongly marked and permanent varieties". He argues for the ubiquity of variation in nature. Historians have noted that naturalists had long been aware that the individuals of a species differed from one another, but had generally considered such variations to be limited and unimportant deviations from the archetype of each species, that archetype being a fixed ideal in the mind of God. Darwin and Wallace made variation among individuals of the same species central to understanding the natural world.

What does Darwin theorize about different species with regard to variety?
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A: "species are only strongly marked and permanent varieties"

Problem: In Canada, the largest Presbyterian denomination and indeed the largest Protestant denomination was the Presbyterian Church in Canada, formed in 1875 with the merger of four regional groups. In 1925, the United Church of Canada was formed by the majority of Presbyterians combining with the Methodist Church, Canada, and the Congregational Union of Canada. A sizable minority of Canadian Presbyterians, primarily in southern Ontario but also throughout the entire nation, withdrew, and reconstituted themselves as a non-concurring continuing Presbyterian body. They regained use of the original name in 1939.
When was the Presbyterian Church in Canada formed?
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Answer: 1875

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Jehovah's Witnesses believe that God's kingdom is a literal government in heaven, ruled by Jesus Christ and 144,000 "spirit-anointed" Christians drawn from the earth, which they associate with Jesus' reference to a "new covenant". The kingdom is viewed as the means by which God will accomplish his original purpose for the earth, transforming it into a paradise without sickness or death. It is said to have been the focal point of Jesus' ministry on earth. They believe the kingdom was established in heaven in 1914, and that Jehovah's Witnesses serve as representatives of the kingdom on earth.
When do Jehovah Witnesses believe the kingdom of heaven was established?
A: 1914

Context and question: Collective training at the unit level takes place at the unit's assigned station, but the most intensive training at higher echelons is conducted at the three combat training centers (CTC); the National Training Center (NTC) at Fort Irwin, California, the Joint Readiness Training Center (JRTC) at Fort Polk, Louisiana, and the Joint Multinational Training Center (JMRC) at the Hohenfels Training Area in Hohenfels, Germany. ARFORGEN is the Army Force Generation process approved in 2006 to meet the need to continuously replenish forces for deployment, at unit level, and for other echelons as required by the mission. Individual-level replenishment still requires training at a unit level, which is conducted at the continental US (CONUS) replacement center at Fort Bliss, in New Mexico and Texas, before their individual deployment.
Where is the Joint Readiness Training Center located?
Answer: Fort Polk, Louisiana

Question: According to historian Shaye J. D. Cohen, the status of the offspring of mixed marriages was determined patrilineally in the Bible. He brings two likely explanations for the change in Mishnaic times: first, the Mishnah may have been applying the same logic to mixed marriages as it had applied to other mixtures (Kil'ayim). Thus, a mixed marriage is forbidden as is the union of a horse and a donkey, and in both unions the offspring are judged matrilineally. Second, the Tannaim may have been influenced by Roman law, which dictated that when a parent could not contract a legal marriage, offspring would follow the mother.
Is there an answer to this question: What dictated that when a parent could not contract a legal marriage, offspring would follow the father?

Answer: unanswerable

Question: A wide range of beliefs and practices is found across the world among those who call themselves Christian. Denominations and sects disagree on a common definition of "Christianity". For example, Timothy Beal notes the disparity of beliefs among those who identify as Christians in the United States as follows:
Is there an answer to this question: While Christianity is ultimately one belief, a wide range of what is found among the different denominations and sects?

Answer:
beliefs and practices