Input: MP3
The basic MP3 decoding and encoding technology is patent-free in the European Union, all patents having expired there. In the United States, the technology will be substantially patent-free on 31 December 2017 (see below). The majority of MP3 patents expired in the US between 2007 and 2015.

Between which years did most of the MP3 patents in the US expire?
Output: 2007 and 2015


Input: Article: Unsure of his future, he first contemplated returning to London to complete his studies, but decided to return to Boston as a teacher. His father helped him set up his private practice by contacting Gardiner Greene Hubbard, the president of the Clarke School for the Deaf for a recommendation. Teaching his father's system, in October 1872, Alexander Bell opened his "School of Vocal Physiology and Mechanics of Speech" in Boston, which attracted a large number of deaf pupils, with his first class numbering 30 students. While he was working as a private tutor, one of his most famous pupils was Helen Keller, who came to him as a young child unable to see, hear, or speak. She was later to say that Bell dedicated his life to the penetration of that "inhuman silence which separates and estranges." In 1893, Keller performed the sod-breaking ceremony for the construction of the new Bell's new Volta Bureau, dedicated to "the increase and diffusion of knowledge relating to the deaf".

Now answer this question: What city did Bell decide to return to?

Output: Boston


Article: Assembly of desktop computers for the North American market formerly took place at Dell plants in Austin, Texas (original location) and Lebanon, Tennessee (opened in 1999), which have been closed in 2008 and early 2009, respectively. The plant in Winston-Salem, North Carolina received $280 million USD in incentives from the state and opened in 2005, but ceased operations in November 2010, and Dell's contract with the state requires them to repay the incentives for failing to meet the conditions. Most of the work that used to take place in Dell's U.S. plants was transferred to contract manufacturers in Asia and Mexico, or some of Dell's own factories overseas. The Miami, Florida facility of its Alienware subsidiary remains in operation, while Dell continues to produce its servers (its most profitable products) in Austin, Texas.

Question: What state was the Dell plant that received $280 million in incentives in?
Ans: North Carolina


Here is a question about this article: Southampton has always been a port, and the docks have long been a major employer in the city. In particular, it is a port for cruise ships; its heyday was the first half of the 20th century, and in particular the inter-war years, when it handled almost half the passenger traffic of the UK. Today it remains home to luxury cruise ships, as well as being the largest freight port on the Channel coast and fourth largest UK port by tonnage, with several container terminals. Unlike some other ports, such as Liverpool, London, and Bristol, where industry and docks have largely moved out of the city centres leaving room for redevelopment, Southampton retains much of its inner-city industry. Despite the still active and expanding docklands to the west of the city centre, further enhanced with the opening of a fourth cruise terminal in 2009, parts of the eastern docks have been redeveloped; the Ocean Village development, which included a local marina and small entertainment complex, is a good example. Southampton is home to the headquarters of both the Maritime and Coastguard Agency and the Marine Accident Investigation Branch of the Department for Transport in addition to cruise operator Carnival UK.
What is the answer to this question: What kind of passenger ships make up a lot of the traffic in the port of Southampton?
****
So... cruise ships


The problem: Answer a question about this article:
In addition to membership, as of 2010[update] there are 1,335 officially registered fan clubs, called penyes, around the world. The fan clubs promote Barcelona in their locality and receive beneficial offers when visiting Barcelona. Among the best supported teams globally, Barcelona has the highest social media following in the world among sports teams, with over 90 million Facebook fans as of February 2016. The club has had many prominent people among its supporters, including Pope John Paul II, who was an honorary member, and former prime minister of Spain José Luis Rodríguez Zapatero. FC Barcelona has the second highest average attendance of European football clubs only behind Borussia Dortmund.
How many registered fan clubs does Barcelona have worldwide?
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The answer: 1,335


The problem: Answer a question about this article:
The study of plants is vital because they underpin almost all animal life on Earth by generating a large proportion of the oxygen and food that provide humans and other organisms with aerobic respiration with the chemical energy they need to exist. Plants, algae and cyanobacteria are the major groups of organisms that carry out photosynthesis, a process that uses the energy of sunlight to convert water and carbon dioxide into sugars that can be used both as a source of chemical energy and of organic molecules that are used in the structural components of cells. As a by-product of photosynthesis, plants release oxygen into the atmosphere, a gas that is required by nearly all living things to carry out cellular respiration. In addition, they are influential in the global carbon and water cycles and plant roots bind and stabilise soils, preventing soil erosion. Plants are crucial to the future of human society as they provide food, oxygen, medicine, and products for people, as well as creating and preserving soil.
What is the process that converts sunlight to energy?
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The answer:
photosynthesis