Problem: Nigeria:

NigeriaSat-2, Nigeria's second satellite, was built as a high-resolution earth satellite by Surrey Space Technology Limited, a United Kingdom-based satellite technology company. It has 2.5-metre resolution panchromatic (very high resolution), 5-metre multispectral (high resolution, NIR red, green and red bands), and 32-metre multispectral (medium resolution, NIR red, green and red bands) antennas, with a ground receiving station in Abuja. The NigeriaSat-2 spacecraft alone was built at a cost of over £35 million. This satellite was launched into orbit from a military base in China.

What was Nigeria's second satellite called?
---
A: NigeriaSat-2


Problem: The success of the show's alumni however has led to a more positive assessment of the show, and the show was described as having "proven it has a valid way to pick talent and a proven way to sell records". While the industry is divided on the show success, its impact is felt particularly strongly in the country music format. According to a CMT exec, reflecting on the success of Idol alumni in the country genre, "if you want to try and get famous fast by going to a cattle call audition on TV, Idol reasonably remains the first choice for anyone," and that country music and Idol "go together well".
Which music genre has had the most success from American Idol? 
---
Answer: country


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In addition to the Architects Registration Board, the RIBA provides accreditation to architecture schools in the UK under a course validation procedure. It also provides validation to international courses without input from the ARB.
What process does RIBA use in its accreditation system?
A: course validation


Context and question: Soon after the passing of the 1931 Act, in the book published on the occasion of the Institute's centenary celebration in 1934, Harry Barnes, FRIBA, Chairman of the Registration Committee, mentioned that ARCUK could not be a rival of any architectural association, least of all the RIBA, given the way ARCUK was constituted. Barnes commented that the Act's purpose was not protecting the architectural profession, and that the legitimate interests of the profession were best served by the (then) architectural associations in which some 80 per cent of those practising architecture were to be found.
Who was the head of the Registration Committee in 1934?
Answer: Harry Barnes


Question: The Catholic Church uses wine in the celebration of the Eucharist because it is part of the tradition passed down through the ages starting with Jesus Christ at the Last Supper, where Catholics believe the consecrated bread and wine literally become the body and blood of Jesus Christ, a dogma known as transubstantiation. Wine is used (not grape juice) both due to its strong Scriptural roots, and also to follow the tradition set by the early Christian Church. The Code of Canon Law of the Catholic Church (1983), Canon 924 says that the wine used must be natural, made from grapes of the vine, and not corrupt. In some circumstances, a priest may obtain special permission to use grape juice for the consecration, however this is extremely rare and typically requires sufficient impetus to warrant such a dispensation, such as personal health of the priest.
Is there an answer to this question: What may a priest use in place of wine for consecration for health reasons?

Answer: grape juice


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The elimination of wolves from Yellowstone National Park had profound impacts on the trophic pyramid. Without predation, herbivores began to over-graze many woody browse species, affecting the area's plant populations. In addition, wolves often kept animals from grazing in riparian areas, which protected beavers from having their food sources encroached upon. The removal of wolves had a direct effect on beaver populations, as their habitat became territory for grazing. Furthermore, predation keeps hydrological features such as creeks and streams in normal working order. Increased browsing on willows and conifers along Blacktail Creek due to a lack of predation caused channel incision because they helped slow the water down and hold the soil in place.
Broader ecological impacts can occur when an apex predator is removed, in the case of Yellowstone, this includes alteration to the?
A:
hydrological features