Problem: Please answer a question about the following article about Alexander Graham Bell:
As a child, young Bell displayed a natural curiosity about his world, resulting in gathering botanical specimens as well as experimenting even at an early age. His best friend was Ben Herdman, a neighbor whose family operated a flour mill, the scene of many forays. Young Bell asked what needed to be done at the mill. He was told wheat had to be dehusked through a laborious process and at the age of 12, Bell built a homemade device that combined rotating paddles with sets of nail brushes, creating a simple dehusking machine that was put into operation and used steadily for a number of years. In return, John Herdman gave both boys the run of a small workshop in which to "invent".
Who was Bell's closest friend as a child?
A: Ben Herdman

Question: Read this and answer the question

The number of pubs in the UK has declined year on year, at least since 1982. Various reasons are put forward for this, such as the failure of some establishments to keep up with customer requirements. Others claim the smoking ban of 2007, intense competition from gastro-pubs, the availability of cheap alcohol in supermarkets or the general economic climate are either to blame, or are factors in the decline. Changes in demographics may be an additional factor.

What business that sells cheap alcohol has sometimes been held to have resulted in the decline of pubs?
Answer: supermarkets

Problem: The jurisdictions of the city's administrative agencies are, in ascending order of size: the Hyderabad Police area, Hyderabad district, the GHMC area ("Hyderabad city") and the area under the Hyderabad Metropolitan Development Authority (HMDA). The HMDA is an apolitical urban planning agency that covers the GHMC and its suburbs, extending to 54 mandals in five districts encircling the city. It coordinates the development activities of GHMC and suburban municipalities and manages the administration of bodies such as the Hyderabad Metropolitan Water Supply and Sewerage Board (HMWSSB).
What does the acronym HMWSSB represent?
The answer is the following: Hyderabad Metropolitan Water Supply and Sewerage Board

According to a 2011 Pew Research Center survey, there were 2.2 billion Christians around the world in 2010, up from about 600 million in 1910. By 2050, the Christian population is expected to exceed 3 billion. According to a 2012 Pew Research Center survey Christianity will remain the world's largest religion in 2050, if current trends continue.
How many Christians were in the world in 1910?
600 million

Input: Samurai
A samurai could divorce his wife for a variety of reasons with approval from a superior, but divorce was, while not entirely nonexistent, a rare event. A wife's failure to produce a son was cause for divorce, but adoption of a male heir was considered an acceptable alternative to divorce. A samurai could divorce for personal reasons, even if he simply did not like his wife, but this was generally avoided as it would embarrass the person who had arranged the marriage. A woman could also arrange a divorce, although it would generally take the form of the samurai divorcing her. After a divorce samurai had to return the betrothal money, which often prevented divorces.

What financial concern prevented divorce?
Output: After a divorce samurai had to return the betrothal money

Problem: Please answer a question about the following article about United States presidential election, 2004:
To distinguish official campaigning from independent campaigning, political advertisements on television were required to include a verbal disclaimer identifying the organization responsible for the advertisement. Advertisements produced by political campaigns usually included the statement, "I'm [candidate's name], and I approve this message." Advertisements produced by independent organizations usually included the statement, "[Organization name] is responsible for the content of this advertisement", and from September 3 (60 days before the general election), such organizations' ads were prohibited from mentioning any candidate by name. Previously, television advertisements only required a written "paid for by" disclaimer on the screen.
What was the tag line requirement before?
A:
Previously, television advertisements only required a written "paid for by" disclaimer on the screen.