Problem: Federalism:

The government of India is based on a tiered system, in which the Constitution of India delineates the subjects on which each tier of government has executive powers. The Constitution originally provided for a two-tier system of government, the Union Government (also known as the Central Government), representing the Union of India, and the State governments. Later, a third tier was added in the form of Panchayats and Municipalities. In the current arrangement, The Seventh Schedule of the Indian Constitution delimits the subjects of each level of governmental jurisdiction, dividing them into three lists:

What is a tiered system?
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A: the Constitution of India delineates the subjects on which each tier of government has executive powers

Problem: Richard Feynman:

Feynman has been called the "Great Explainer". He gained a reputation for taking great care when giving explanations to his students and for making it a moral duty to make the topic accessible. His guiding principle was that, if a topic could not be explained in a freshman lecture, it was not yet fully understood. Feynman gained great pleasure from coming up with such a "freshman-level" explanation, for example, of the connection between spin and statistics. What he said was that groups of particles with spin "repel", whereas groups with integer spin "clump". This was a brilliantly simplified way of demonstrating how FermiDirac statistics and BoseEinstein statistics evolved as a consequence of studying how fermions and bosons behave under a rotation of 360. This was also a question he pondered in his more advanced lectures, and to which he demonstrated the solution in the 1986 Dirac memorial lecture. In the same lecture, he further explained that antiparticles must exist, for if particles had only positive energies, they would not be restricted to a so-called "light cone".

Antiparticles had to exist because if particles only were of positive energy, they would not be in what?
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A: light cone

Problem: Cubism:

At the Salon d'Automne of the same year, in addition to the Independants group of Salle 41, were exhibited works by Andre Lhote, Marcel Duchamp, Jacques Villon, Roger de La Fresnaye, Andre Dunoyer de Segonzac and Frantisek Kupka. The exhibition was reviewed in the October 8, 1911 issue of The New York Times. This article was published a year after Gelett Burgess' The Wild Men of Paris, and two years prior to the Armory Show, which introduced astonished Americans, accustomed to realistic art, to the experimental styles of the European avant garde, including Fauvism, Cubism, and Futurism. The 1911 New York Times article portrayed works by Picasso, Matisse, Derain, Metzinger and others dated before 1909; not exhibited at the 1911 Salon. The article was titled The "Cubists" Dominate Paris' Fall Salon and subtitled Eccentric School of Painting Increases Its Vogue in the Current Art Exhibition - What Its Followers Attempt to Do.

In what year did the New York Times not review the Salon d'Automne?
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A: unanswerable

Problem: Queen (band):

In the autumn of 2009, Glee featured the fictional high school's show choir singing "Somebody to Love" as their second act performance in the episode "The Rhodes Not Taken". The performance was included on the show's Volume 1 soundtrack CD. In June 2010, the choir performed "Another One Bites the Dust" in the episode "Funk". The following week's episode, "Journey to Regionals", features a rival choir performing "Bohemian Rhapsody" in its entirety. The song was featured on the episode's EP. In May 2012, the choir performed "We Are the Champions" in the episode "Nationals", and the song features in The Graduation Album.

Which Queen song was featured in the autumn of 2009 on Glee
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A:
Somebody to Love