Problem: Please answer a question about the following article about Gene:
According to Mendelian inheritance, variations in an organism's phenotype (observable physical and behavioral characteristics) are due in part to variations in its genotype (particular set of genes). Each gene specifies a particular trait with different sequence of a gene (alleles) giving rise to different phenotypes. Most eukaryotic organisms (such as the pea plants Mendel worked on) have two alleles for each trait, one inherited from each parent.:20
How many alleles do most eukaryotic organisms have for each trait?
A: two alleles for each trait
Problem: Please answer a question about the following article about London:
Greater London's population declined steadily in the decades after the Second World War, from an estimated peak of 8.6 million in 1939 to around 6.8 million in the 1980s. The principal ports for London moved downstream to Felixstowe and Tilbury, with the London Docklands area becoming a focus for regeneration, including the Canary Wharf development. This was borne out of London's ever-increasing role as a major international financial centre during the 1980s. The Thames Barrier was completed in the 1980s to protect London against tidal surges from the North Sea.
What event preceded a substantial decrease in the average population in London? 
A: the Second World War
Problem: Please answer a question about the following article about Seven Years%27 War:
This problem was compounded when the main Hanoverian army under Cumberland was defeated at the Battle of Hastenbeck and forced to surrender entirely at the Convention of Klosterzeven following a French Invasion of Hanover. The Convention removed Hanover and Brunswick from the war, leaving the Western approach to Prussian territory extremely vulnerable. Frederick sent urgent requests to Britain for more substantial assistance, as he was now without any outside military support for his forces in Germany.
What country won the battle at Hanover?
A: French
Problem: Please answer a question about the following article about Queen (band):
During 1976, Queen played one of their most famous gigs, a free concert in Hyde Park, London. A concert organised by the entrepreneur Richard Branson, it set an attendance record with 150,000 people confirmed in the audience. On 1 December 1976, Queen were the intended guests on London's early evening Today programme, but they pulled out at the last-minute, which saw their late replacement on the show, EMI labelmate the Sex Pistols, give their seminal interview. During the A Day at the Races Tour in 1977, Queen performed sold-out shows at Madison Square Garden, New York, in February, and Earls Court, London, in June.
Who organized a free concert by Queen in 1976?
A:
Richard Branson