Article: Disadvantages of electric traction include high capital costs that may be uneconomic on lightly trafficked routes; a relative lack of flexibility since electric trains need electrified tracks or onboard supercapacitors and charging infrastructure at stations; and a vulnerability to power interruptions. Different regions may use different supply voltages and frequencies, complicating through service. The limited clearances available under catenaries may preclude efficient double-stack container service. The lethal voltages on contact wires and third rails are a safety hazard to track workers, passengers and trespassers. Overhead wires are safer than third rails, but they are often considered unsightly.

Question: What issue can complicate electric railway service?
Ans: different supply voltages and frequencies,


Here is a question about this article: In some modern day nations and regions in which Sharia law is ostensibly practiced, heresy remains an offense punishable by death. One example is the 1989 fatwa issued by the government of Iran, offering a substantial bounty for anyone who succeeds in the assassination of author Salman Rushdie, whose writings were declared as heretical.
What is the answer to this question: What author was declared a heretic and had a bounty placed on his head by the government of Iran?
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So... Salman Rushdie


The problem: Answer a question about this article:
The flower may consist only of these parts, as in willow, where each flower comprises only a few stamens or two carpels. Usually, other structures are present and serve to protect the sporophylls and to form an envelope attractive to pollinators. The individual members of these surrounding structures are known as sepals and petals (or tepals in flowers such as Magnolia where sepals and petals are not distinguishable from each other). The outer series (calyx of sepals) is usually green and leaf-like, and functions to protect the rest of the flower, especially the bud. The inner series (corolla of petals) is, in general, white or brightly colored, and is more delicate in structure. It functions to attract insect or bird pollinators. Attraction is effected by color, scent, and nectar, which may be secreted in some part of the flower. The characteristics that attract pollinators account for the popularity of flowers and flowering plants among humans.
Individual members of enveloping structures are known by what terms?
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The answer: sepals and petals


Problem: Please answer a question about the following article about British Empire:
England's first permanent settlement in the Americas was founded in 1607 in Jamestown, led by Captain John Smith and managed by the Virginia Company. Bermuda was settled and claimed by England as a result of the 1609 shipwreck there of the Virginia Company's flagship, and in 1615 was turned over to the newly formed Somers Isles Company. The Virginia Company's charter was revoked in 1624 and direct control of Virginia was assumed by the crown, thereby founding the Colony of Virginia. The London and Bristol Company was created in 1610 with the aim of creating a permanent settlement on Newfoundland, but was largely unsuccessful. In 1620, Plymouth was founded as a haven for puritan religious separatists, later known as the Pilgrims. Fleeing from religious persecution would become the motive of many English would-be colonists to risk the arduous trans-Atlantic voyage: Maryland was founded as a haven for Roman Catholics (1634), Rhode Island (1636) as a colony tolerant of all religions and Connecticut (1639) for Congregationalists. The Province of Carolina was founded in 1663. With the surrender of Fort Amsterdam in 1664, England gained control of the Dutch colony of New Netherland, renaming it New York. This was formalised in negotiations following the Second Anglo-Dutch War, in exchange for Suriname. In 1681, the colony of Pennsylvania was founded by William Penn. The American colonies were less financially successful than those of the Caribbean, but had large areas of good agricultural land and attracted far larger numbers of English emigrants who preferred their temperate climates.
Who led England's first permanent settlement in the Americas?
A: Captain John Smith


Question: Read this and answer the question

Translation of sung texts is generally much more restrictive than translation of poetry, because in the former there is little or no freedom to choose between a versified translation and a translation that dispenses with verse structure. One might modify or omit rhyme in a singing translation, but the assignment of syllables to specific notes in the original musical setting places great challenges on the translator. There is the option in prose sung texts, less so in verse, of adding or deleting a syllable here and there by subdividing or combining notes, respectively, but even with prose the process is almost like strict verse translation because of the need to stick as closely as possible to the original prosody of the sung melodic line.

How can a syllable be added or deleted in prose sung texts?
Answer: by subdividing or combining notes


Waste management including sewage treatment, the linked processes of deforestation and soil degradation, and climate change or global warming are the major environmental problems in Nigeria. Waste management presents problems in a mega city like Lagos and other major Nigerian cities which are linked with economic development, population growth and the inability of municipal councils to manage the resulting rise in industrial and domestic waste. This huge waste management problem is also attributable to unsustainable environmental management lifestyles of Kubwa Community in the Federal Capital Territory, where there are habits of indiscriminate disposal of waste, dumping of waste along or into the canals, sewerage systems that are channels for water flows, etc.
What Nigerian community has the worst unsustainable waste management?
Kubwa Community