Problem: Group (mathematics):

Lie groups are of fundamental importance in modern physics: Noether's theorem links continuous symmetries to conserved quantities. Rotation, as well as translations in space and time are basic symmetries of the laws of mechanics. They can, for instance, be used to construct simple models—imposing, say, axial symmetry on a situation will typically lead to significant simplification in the equations one needs to solve to provide a physical description.v[›] Another example are the Lorentz transformations, which relate measurements of time and velocity of two observers in motion relative to each other. They can be deduced in a purely group-theoretical way, by expressing the transformations as a rotational symmetry of Minkowski space. The latter serves—in the absence of significant gravitation—as a model of space time in special relativity. The full symmetry group of Minkowski space, i.e. including translations, is known as the Poincaré group. By the above, it plays a pivotal role in special relativity and, by implication, for quantum field theories. Symmetries that vary with location are central to the modern description of physical interactions with the help of gauge theory.

What are basic laws of mechanics?
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A: unanswerable


Problem: A format called quiet storm is often included in urban adult contemporary, and is often played during the evening, blending the urban AC and soft AC styles of music. The music that is played is strictly ballads and slow jams, mostly but not limited to Black and Latino artists. Popular artists in the quiet storm format are Teena Marie, Freddie Jackson, Johnny Gill, Lalah Hathaway, Vanessa L. Williams, Toni Braxton, and En Vogue among others.
What is the typical ethnicity of artists played on quiet storm stations?
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Answer: Black and Latino


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In February 2010 Shell and Cosan formed a 50:50 joint-venture, Raízen, comprising all of Cosan's Brazilian ethanol, energy generation, fuel distribution and sugar activities, and all of Shell's Brazilian retail fuel and aviation distribution businesses. In March 2010, Shell announced the sale of some of its assets, including its liquid petroleum gas (LPG) business, to meet the cost of a planned $28bn capital spending programme. Shell invited buyers to submit indicative bids, due by 22 March, with a plan to raise $2–3bn from the sale. In June 2010, Royal Dutch Shell agreed to acquire all the business of East Resources for a cash consideration of $4.7 billion. The transaction included East Resources' tight gas fields.
When did Shell form a joint venture with Raizen?
A: unanswerable


Context and question: Also on the north side is the suburban community of Catalina Foothills, located in the foothills of the Santa Catalina Mountains just north of the city limits. This community includes among the area's most expensive homes, sometimes multimillion-dollar estates. The Foothills area is generally defined as north of River Road, east of Oracle Road, and west of Sabino Creek. Some of the Tucson area's major resorts are located in the Catalina Foothills, including the Hacienda Del Sol, Westin La Paloma Resort, Loews Ventana Canyon Resort and Canyon Ranch Resort. La Encantada, an upscale outdoor shopping mall, is also in the Foothills.
What community is north of Tucson's city limits?
Answer: Catalina Foothills


Question: Wove paper does not exhibit "laidlines", which are small regular lines left behind on paper when it was handmade in a mould made from rows of metal wires or bamboo. Laidlines are very close together. They run perpendicular to the "chainlines", which are further apart. Handmade paper similarly exhibits "deckle edges", or rough and feathery borders.
Is there an answer to this question: Which type of paper exhibits smooth borders?

Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Later the same month, Barcelona won the UEFA Super Cup after defeating Porto 2–0 thanks to goals from Lionel Messi and Cesc Fàbregas. This extended the club's overall number of official trophies to 74, surpassing Real Madrid's total amount of official trophies. The UEFA Super Cup victory also marked another impressive achievement as Josep Guardiola won his 12th trophy out of 15 possible in only three years at the helm of the club, becoming the all-time record holder of most titles won as a coach at FC Barcelona.
Which team did Barcelona beat to win the UEFA Super Cup?
A:
Porto