Question: Medical facilities in Mali are very limited, and medicines are in short supply. Malaria and other arthropod-borne diseases are prevalent in Mali, as are a number of infectious diseases such as cholera and tuberculosis. Mali's population also suffers from a high rate of child malnutrition and a low rate of immunization. An estimated 1.9 percent of the adult and children population was afflicted with HIV/AIDS that year, among the lowest rates in Sub-Saharan Africa. An estimated 85–91 percent of Mali's girls and women have had female genital mutilation (2006 and 2001 data).
Try to answer this question if possible: What disease is rare among children?
Answer: unanswerable
Question: Founded in 1899 by a group of Swiss, English and Catalan footballers led by Joan Gamper, the club has become a symbol of Catalan culture and Catalanism, hence the motto "Més que un club" (More than a club). Unlike many other football clubs, the supporters own and operate Barcelona. It is the second most valuable sports team in the world, worth $3.16 billion, and the world's second richest football club in terms of revenue, with an annual turnover of €560.8 million. The official Barcelona anthem is the "Cant del Barça", written by Jaume Picas and Josep Maria Espinàs.
Try to answer this question if possible: How much is club Barcelona worth?
Answer: $3.16 billion
Question: The Muslim population of the region consisted mainly of native Iberian converts to Islam (the so-called Muwallad or Muladi) and to a lesser extent Berbers and Arabs. The Arabs were principally noblemen from Oman; and though few in numbers, they constituted the elite of the population. The Berbers were originally from the Atlas mountains and Rif mountains of North Africa and were essentially nomads. In Portugal, the Muslim population (or "Moors"), relatively small in numbers, stayed in the Algarve region, and south of the Tagus. Today, there are approximately 800 words in the Portuguese language of Arabic origin. The Muslims were expelled from Portugal 300 years earlier than in neighbouring Spain, which is reflected both in Portuguese culture and the language, which is mostly Celtiberian and Vulgar Latin.
Try to answer this question if possible: In which region of Portugal did the Muslim population stay?
Answer: Algarve region, and south of the Tagus
Question: Glaciers pick up rocks and sediment with them as they flow. This causes erosion and the formation of valleys over time. The Inn valley is an example of a valley carved by glaciers during the ice ages with a typical terraced structure caused by erosion. Eroded rocks from the most recent ice age lie at the bottom of the valley while the top of the valley consists of erosion from earlier ice ages. Glacial valleys have characteristically steep walls (reliefs); valleys with lower reliefs and talus slopes are remnants of glacial troughs or previously infilled valleys. Moraines, piles of rock picked up during the movement of the glacier, accumulate at edges, center and the terminus of glaciers.
Try to answer this question if possible: What is an example of a valley carved by glaciers during the ice ages? 
Answer:
The Inn valley