Problem: Insect:

Traditional morphology-based or appearance-based systematics have usually given the Hexapoda the rank of superclass,:180 and identified four groups within it: insects (Ectognatha), springtails (Collembola), Protura, and Diplura, the latter three being grouped together as the Entognatha on the basis of internalized mouth parts. Supraordinal relationships have undergone numerous changes with the advent of methods based on evolutionary history and genetic data. A recent theory is that the Hexapoda are polyphyletic (where the last common ancestor was not a member of the group), with the entognath classes having separate evolutionary histories from the Insecta. Many of the traditional appearance-based taxa have been shown to be paraphyletic, so rather than using ranks like subclass, superorder, and infraorder, it has proved better to use monophyletic groupings (in which the last common ancestor is a member of the group). The following represents the best-supported monophyletic groupings for the Insecta.

How many groups are defined in the superclass?
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A: four groups


Problem: Hard rock:

Bon Jovi's third album, Slippery When Wet (1986), mixed hard rock with a pop sensitivity and spent a total of 8 weeks at the top of the Billboard 200 album chart, selling 12 million copies in the US while becoming the first hard rock album to spawn three top 10 singles — two of which reached number one. The album has been credited with widening the audiences for the genre, particularly by appealing to women as well as the traditional male dominated audience, and opening the door to MTV and commercial success for other bands at the end of the decade. The anthemic The Final Countdown (1986) by Swedish group Europe was an international hit, reaching number eight on the US charts while hitting the top 10 in nine other countries. This era also saw more glam-infused American hard rock bands come to the forefront, with both Poison and Cinderella releasing their multi-platinum début albums in 1986. Van Halen released 5150 (1986), their first album with Sammy Hagar on lead vocals, which was number one in the US for three weeks and sold over 6 million copies. By the second half of the decade, hard rock had become the most reliable form of commercial popular music in the United States.

Who was the new lead singer for Van Halen on 5150?
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A: Sammy Hagar


Problem: Kanye West:

Raised in Chicago, West briefly attended art school before becoming known as a producer for Roc-A-Fella Records in the early 2000s, producing hit singles for artists such as Jay-Z and Alicia Keys. Intent on pursuing a solo career as a rapper, West released his debut album The College Dropout in 2004 to widespread commercial and critical success, and founded record label GOOD Music. He went on to explore a variety of different musical styles on subsequent albums that included the baroque-inflected Late Registration (2005), the arena-inspired Graduation (2007), and the starkly polarizing 808s & Heartbreak (2008). In 2010, he released his critically acclaimed fifth album, the maximalist My Beautiful Dark Twisted Fantasy, and the following year he collaborated with Jay-Z on the joint LP Watch the Throne (2011). West released his abrasive sixth album, Yeezus, to further critical praise in 2013. Following a series of recording delays and work on non-musical projects, West's seventh album, The Life of Pablo, was released in 2016.

With which artists that Kanye formerly produced for did he go on to collaborate with?
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A: Jay-Z


Problem: Bern:

Bern was a candidate to host the 2010 Winter Olympics, but withdrew its bid in September 2002 after a referendum was passed that showed that the bid was not supported by locals. Those games were eventually awarded to Vancouver, Canada.

What year did they withdraw their bid?
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A:
2002