Problem: Eritrea:

Education in Eritrea is officially compulsory between seven and 13 years of age. However, the education infrastructure is inadequate to meet current needs. Statistics vary at the elementary level, suggesting that between 65 and 70% of school-aged children attend primary school; Approximately 61% attend secondary school. Student-teacher ratios are high: 45 to 1 at the elementary level and 54 to 1 at the secondary level. There are an average 63 students per classroom at the elementary level and 97 per classroom at the secondary level. Learning hours at school are often less than six hours per day. Skill shortages are present at all levels of the education system, and funding for and access to education vary significantly by gender and location. Illiteracy estimates for Eritrea range from around 40% to as high as 70%.

What is the student-teacher ratio in elementary schools?
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A: 45 to 1

Problem: Canadian Armed Forces:

Major air bases are located in British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, Nova Scotia, and Newfoundland and Labrador, while administrative and command and control facilities are located in Winnipeg and North Bay. A Canadian component of the NATO Airborne Early Warning Force is also based at NATO Air Base Geilenkirchen near Geilenkirchen, Germany.

Where is the Canadian component of the NATO located?
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A: Geilenkirchen, Germany

Problem: Tibet:

The modern Standard Chinese exonym for the ethnic Tibetan region is Zangqu (Chinese: ; pinyin: Zangqu), which derives by metonymy from the Tsang region around Shigatse plus the addition of a Chinese suffix, qu, which means "area, district, region, ward". Tibetan people, language, and culture, regardless of where they are from, are referred to as Zang (Chinese: ; pinyin: Zang) although the geographical term Xizang is often limited to the Tibet Autonomous Region. The term Xizang was coined during the Qing dynasty in the reign of the Jiaqing Emperor (17961820) through the addition of a prefix meaning "west" ( xi) to Zang.

What is the Tsang exonym for the ethnic Tibetan region?
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A: unanswerable

Problem: Tuvalu:

Reverse osmosis (R/O) desalination units supplement rainwater harvesting on Funafuti. The 65 m3 desalination plant operates at a real production level of around 40 m3 per day. R/O water is only intended to be produced when storage falls below 30%, however demand to replenish household storage supplies with tanker-delivered water means that the R/O desalination units are continually operating. Water is delivered at a cost of A$3.50 per m3. Cost of production and delivery has been estimated at A$6 per m3, with the difference subsidised by the government.

What type of desalination is used on Funafuti?
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A:
Reverse osmosis