The problem: Answer a question about this article:
On 10 February 2010, the 122nd IOC session at Vancouver announced Nanjing as the host city for the 2nd Summer Youth Olympic Games. The slogan of the 2014 Youth Olympic Games was “Share the Games, Share our Dreams”. The Nanjing 2014 Youth Olympic Games featured all 28 sports on the Olympic programme and were held from 16 to 28 August. The Nanjing Youth Olympic Games Organising Committee (NYOGOC) worked together with the International Olympic Committee (IOC) to attract the best young athletes from around the world to compete at the highest level. Off the competition fields, an integrated culture and education programme focused on discussions about education, Olympic values, social challenges, and cultural diversity. The YOG aims to spread the Olympic spirit and encourage sports participation.
When was Nanjing announced as the host city for the 2nd Summer Youth Olympic Games?
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The answer: 10 February 2010


The problem: Answer a question about this article:
DNA samples from 1228 Russians show that the Y chromosomes analyzed, all except 20 (1.6%) fall into seven major haplogroups all characteristic to West Eurasian populations. Taken together, they account for 95% of the total Russian Y chromosomal pool. Only (0.7%) fell into haplogroups that are specific to East and South Asian populations. Mitochondrial DNA (mtDNA) examined in Poles and Russians revealed the presence of all major European haplogroups, which were characterized by similar patterns of distribution in Poles and Russians. An analysis of the DNA did not reveal any specific combinations of unique mtDNA haplotypes and their subclusters. The DNA clearly shows that both Poles and Russians are not different from the neighbouring European populations.
What percentage fell into haplogroups that are specific to East and South Asian populations?
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The answer: 0.7%


The problem: Answer a question about this article:
Viviparous mammals are in the subclass Theria; those living today are in the marsupial and placental infraclasses. A marsupial has a short gestation period, typically shorter than its estrous cycle, and gives birth to an undeveloped newborn that then undergoes further development; in many species, this takes place within a pouch-like sac, the marsupium, located in the front of the mother's abdomen. This is the plesyomorphic condition among viviparous mammals; the presence of epipubic bones in all non-placental mammals prevents the expansion of the torso needed for full pregnancy. Even non-placental eutherians probably reproduced this way.
Which sub class are most viviparous mammals in?
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The answer: Theria


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In about 260 AD, the fall of the Agri Decumates territory north of the Rhine transformed today's Switzerland into a frontier land of the Empire. Repeated raids by the Alamanni tribes provoked the ruin of the Roman towns and economy, forcing the population to find shelter near Roman fortresses, like the Castrum Rauracense near Augusta Raurica. The Empire built another line of defense at the north border (the so-called Donau-Iller-Rhine-Limes), but at the end of the fourth century the increased Germanic pressure forced the Romans to abandon the linear defence concept, and the Swiss plateau was finally open to the settlement of German tribes.
Who was allowed to settle on the Swiss plateau by the end of the 4th century?
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The answer:
German tribes