Problem: Szlachta:

The szlachta's prevalent mentality and ideology were manifested in "Sarmatism", a name derived from a myth of the szlachta's origin in the powerful ancient nation of Sarmatians. This belief system became an important part of szlachta culture and affected all aspects of their lives. It was popularized by poets who exalted traditional village life, peace and pacifism. It was also manifested in oriental-style apparel (the zupan, kontusz, sukmana, pas kontuszowy, delia); and made the scimitar-like szabla, too, a near-obligatory item of everyday szlachta apparel. Sarmatism served to integrate the multi-ethnic nobility as it created an almost nationalistic sense of unity and pride in the szlachta's "Golden Liberty" (zota wolnosc). Knowledge of Latin was widespread, and most szlachta freely mixed Polish and Latin vocabulary (the latter, "macaronisms"from "macaroni") in everyday conversation.

What was the prevalent mentality and ideology called?
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A: Sarmatism

Problem: The first BeiDou system, officially called the BeiDou Satellite Navigation Experimental System (simplified Chinese: ; traditional Chinese: ; pinyin: Beidou weixing daohang shiyan xitong) and also known as BeiDou-1, consists of three satellites and offers limited coverage and applications. It has been offering navigation services, mainly for customers in China and neighboring regions, since 2000.
BeiDou-1 consists of 7 satellites and offers what?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Uranium's average concentration in the Earth's crust is (depending on the reference) 2 to 4 parts per million, or about 40 times as abundant as silver. The Earth's crust from the surface to 25 km (15 mi) down is calculated to contain 1017 kg (21017 lb) of uranium while the oceans may contain 1013 kg (21013 lb). The concentration of uranium in soil ranges from 0.7 to 11 parts per million (up to 15 parts per million in farmland soil due to use of phosphate fertilizers), and its concentration in sea water is 3 parts per billion.
What is the concentration of uranium in sea water?
A: 3 parts per billion

Context and question: The Neapolitan style has an almond-shaped body resembling a bowl, constructed from curved strips of wood. It usually has a bent sound table, canted in two planes with the design to take the tension of the 8 metal strings arranged in four courses. A hardwood fingerboard sits on top of or is flush with the sound table. Very old instruments may use wooden tuning pegs, while newer instruments tend to use geared metal tuners. The bridge is a movable length of hardwood. A pickguard is glued below the sound hole under the strings. European roundbacks commonly use a 13-inch scale instead of the 13.876 common on archtop Mandolins.
How many strings does the Neapolitan mandolin have?
Answer: 8

Question: Solar distillation can be used to make saline or brackish water potable. The first recorded instance of this was by 16th-century Arab alchemists. A large-scale solar distillation project was first constructed in 1872 in the Chilean mining town of Las Salinas. The plant, which had solar collection area of 4,700 m2 (51,000 sq ft), could produce up to 22,700 L (5,000 imp gal; 6,000 US gal) per day and operate for 40 years. Individual still designs include single-slope, double-slope (or greenhouse type), vertical, conical, inverted absorber, multi-wick, and multiple effect. These stills can operate in passive, active, or hybrid modes. Double-slope stills are the most economical for decentralized domestic purposes, while active multiple effect units are more suitable for large-scale applications.
Is there an answer to this question: How much water was produced by the plant?

Answer: 22,700 L (5,000 imp gal; 6,000 US gal) per day

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Congo-Brazzaville has had a multi-party political system since the early 1990s, although the system is heavily dominated by President Denis Sassou Nguesso; he has lacked serious competition in the presidential elections held under his rule. Sassou Nguesso is backed by his own Congolese Labour Party (French: Parti Congolais du Travail) as well as a range of smaller parties.
Which party does Sassou belong to?
A:
Congolese Labour Party