Question: Read this and answer the question

Newly electrified lines often show a "sparks effect", whereby electrification in passenger rail systems leads to significant jumps in patronage / revenue. The reasons may include electric trains being seen as more modern and attractive to ride, faster and smoother service, and the fact that electrification often goes hand in hand with a general infrastructure and rolling stock overhaul / replacement, which leads to better service quality (in a way that theoretically could also be achieved by doing similar upgrades yet without electrification). Whatever the causes of the sparks effect, it is well established for numerous routes that have electrified over decades.

What can electrification of modern trains effect?
Answer: patronage / revenue

Problem: According to two researchers, Nesse and Williams, diarrhea may function as an evolved expulsion defense mechanism. As a result, if it is stopped, there might be a delay in recovery. They cite in support of this argument research published in 1973 that found that treating Shigella with the anti-diarrhea drug (Co-phenotrope, Lomotil) caused people to stay feverish twice as long as those not so treated. The researchers indeed themselves observed that: "Lomotil may be contraindicated in shigellosis. Diarrhea may represent a defense mechanism".
What happened with people with Shigella were treated with anti-diarrheal medication?
The answer is the following: caused people to stay feverish twice as long as those not so treated.

London's bus network is one of the largest in the world, running 24 hours a day, with about 8,500 buses, more than 700 bus routes and around 19,500 bus stops. In 2013, the network had more than 2 billion commuter trips per annum, more than the Underground. Around 850 million is taken in revenue each year. London has the largest wheelchair accessible network in the world and, from the 3rd quarter of 2007, became more accessible to hearing and visually impaired passengers as audio-visual announcements were introduced. The distinctive red double-decker buses are an internationally recognised trademark of London transport along with black cabs and the Tube.
What feature added in 2007 facilitated bus travel by London' passengers with hearing and vision impairments?
audio-visual announcements

Input: Chinese characters
In addition to strictness in character size and shape, Chinese characters are written with very precise rules. The most important rules regard the strokes employed, stroke placement, and stroke order. Just as each region that uses Chinese characters has standardized character forms, each also has standardized stroke orders, with each standard being different. Most characters can be written with just one correct stroke order, though some words also have many valid stroke orders, which may occasionally result in different stroke counts. Some characters are also written with different stroke orders due to character simplification.

What are also written with different stroke orders due to character simplification?
Output: characters

Input: Article: The New Delhi town plan, like its architecture, was chosen with one single chief consideration: to be a symbol of British power and supremacy. All other decisions were subordinate to this, and it was this framework that dictated the choice and application of symbology and influences from both Hindu and Islamic architecture.

Now answer this question: What is one type of architecture that heavily influenced the New Delhi town plan?

Output: Hindu

Problem: In 1998, UNICEF reported that Ivory Coast farmers used enslaved children many from surrounding countries. In late 2000 a BBC documentary reported the use of enslaved children in the production of cocoathe main ingredient in chocolate in West Africa. Other media followed by reporting widespread child slavery and child trafficking in the production of cocoa. In 2001, the US State Department estimated there were 15,000 child slaves cocoa, cotton and coffee farms in the Ivory Coast, and the Chocolate Manufacturers Association acknowledged that child slavery is used in the cocoa harvest.[not in citation given][better source needed]
How many child slaves were reported in cocoa, coffee and cotton farms?
The answer is the following:
15,000