Problem: 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.
Which US venue did Queen sell out in 1977?
The answer is the following: Madison Square Garden

Problem: Under the 1963 constitution, Massamba-Debat was elected President for a five-year term. During Massamba-Debat's term in office the regime adopted "scientific socialism" as the country's constitutional ideology. In 1965, Congo established relations with the Soviet Union, the People's Republic of China, North Korea and North Vietnam. Massamba-Debat's regime also invited several hundred Cuban army troops into the country to train his party's militia units and these troops helped his government survive a coup in 1966 led by paratroopers loyal to future President Marien Ngouabi. Nevertheless, Massamba-Debat was unable to reconcile various institutional, tribal and ideological factions within the country and his regime ended abruptly with a bloodless coup d'etat in September 1968.
When did Massamba-Debat lose power in the Congo?
The answer is the following: September 1968

Problem: In 2004, worldwide sales of audio CDs, CD-ROMs and CD-Rs reached about 30 billion discs. By 2007, 200 billion CDs had been sold worldwide. CDs are increasingly being replaced by other forms of digital storage and distribution, with the result that audio CD sales rates in the U.S. have dropped about 50% from their peak; however, they remain one of the primary distribution methods for the music industry. In 2014, revenues from digital music services matched those from physical format sales for the first time.
How many CDs had been distrubuted around the world by 2007?
The answer is the following: 200 billion

Problem: In 1949, the club unveiled a modernised crest featuring the same style of cannon below the club's name, set in blackletter, and above the coat of arms of the Metropolitan Borough of Islington and a scroll inscribed with the club's newly adopted Latin motto, Victoria Concordia Crescit "victory comes from harmony", coined by the club's programme editor Harry Homer. For the first time, the crest was rendered in colour, which varied slightly over the crest's lifespan, finally becoming red, gold and green. Because of the numerous revisions of the crest, Arsenal were unable to copyright it. Although the club had managed to register the crest as a trademark, and had fought (and eventually won) a long legal battle with a local street trader who sold "unofficial" Arsenal merchandise, Arsenal eventually sought a more comprehensive legal protection. Therefore, in 2002 they introduced a new crest featuring more modern curved lines and a simplified style, which was copyrightable. The cannon once again faces east and the club's name is written in a sans-serif typeface above the cannon. Green was replaced by dark blue. The new crest was criticised by some supporters; the Arsenal Independent Supporters' Association claimed that the club had ignored much of Arsenal's history and tradition with such a radical modern design, and that fans had not been properly consulted on the issue.
In what year did Arsenal produce a remodeled crest that could be copyrighted?
The answer is the following:
2002