Problem: Light-emitting diode:

An LED filament consists of multiple LED dice connected in series on a common longitudinal substrate that form a thin rod reminiscent of a traditional incandescent filament. These are being used as a low cost decorative alternative for traditional light bulbs that are being phased out in many countries. The filaments require a rather high voltage to light to nominal brightness, allowing them to work efficiently and simply with mains voltages. Often a simple rectifier and capacitive current limiting are employed to create a low-cost replacement for a traditional light bulb without the complexity of creating a low voltage, high current converter which is required by single die LEDs. Usually they are packaged in a sealed enclosure with a shape similar to lamps they were designed to replace (e.g. a bulb), and filled with inert nitrogen or carbon dioxide gas to remove heat efficiently.

What helps LED filaments remain low cost?
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A: a simple rectifier

Problem: The pointed arch, one of the defining attributes of Gothic, was earlier incorporated into Islamic architecture following the Islamic conquests of Roman Syria and the Sassanid Empire in the Seventh Century. The pointed arch and its precursors had been employed in Late Roman and Sassanian architecture; within the Roman context, evidenced in early church building in Syria and occasional secular structures, like the Roman Karamagara Bridge; in Sassanid architecture, in the parabolic and pointed arches employed in palace and sacred construction.
What is the only defining characteristic of the Gothic architectural style?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Only a few contemporary societies are classified as hunter-gatherers, and many supplement their foraging activity with horticulture and/or keeping animals.
Who uses agriculture and animal domestication to supplement their food?
A: hunter-gatherers

Context and question: Work is undertaken from an early age by vast numbers of children in the world and may have a natural place in growing up. Work can contribute to the well-being of children in a variety of ways; children often choose to work to improve their lives, both in the short- and long-term. At the material level, children's work often contributes to producing food or earning income that benefits themselves and their families; and such income is especially important when the families are poor. Work can provide an escape from debilitating poverty, sometimes by allowing a young person to move away from an impoverished environment. Young people often enjoy their work, especially paid work, or when work involves the company of peers. Even when work is intensive and enforced, children often find ways to combine their work with play.
What are children able to do during intense work situations?
Answer: children often find ways to combine their work with play

Question: In the CFL, if the game is tied at the end of regulation play, then each team is given an equal number of chances to break the tie. A coin toss is held to determine which team will take possession first; the first team scrimmages the ball at the opponent's 35-yard line and advances through a series of downs until it scores or loses possession. If the team scores a touchdown, starting with the 2010 season, it is required to attempt a 2-point conversion. The other team then scrimmages the ball at the same 35-yard line and has the same opportunity to score. After the teams have completed their possessions, if one team is ahead, then it is declared the winner; otherwise, the two teams each get another chance to score, scrimmaging from the other 35-yard line. After this second round, if there is still no winner, during the regular season the game ends as a tie. In a playoff or championship game, the teams continue to attempt to score from alternating 35-yard lines, until one team is leading after both have had an equal number of possessions.
Is there an answer to this question: Which round of tie-breaking is the last possible round in a regular season CFL game?

Answer: second

QUES: Often, the migration route of a long-distance migrator bird doesn't follow a straight line between breeding and wintering grounds. Rather, it could follow an hooked or arched line, with detours around geographical barriers. For most land-birds, such barriers could consist in seas, large water bodies or high mountain ranges, because of the lack of stopover or feeding sites, or the lack of thermal columns for broad-winged birds.

What route does a migrating bird usually follow?
What is the answer?
ANS:
an hooked or arched line