Lossless data compression algorithms usually exploit statistical redundancy to represent data without losing any information, so that the process is reversible. Lossless compression is possible because most real-world data exhibits statistical redundancy. For example, an image may have areas of colour that do not change over several pixels; instead of coding "red pixel, red pixel, ..." the data may be encoded as "279 red pixels". This is a basic example of run-length encoding; there are many schemes to reduce file size by eliminating redundancy.
What usually exploits statistical redundancy?
Lossless data compression algorithms


Input: LaserDisc
There were also 12 cm (4.7 in) (CD size) "single"-style discs produced that were playable on LaserDisc players. These were referred to as CD Video (CD-V) discs, and Video Single Discs (VSD). A CD-V carried up to five minutes of analog LaserDisc-type video content (usually a music video), as well as up to 20 minutes of digital audio CD tracks. The original 1989 release of David Bowie's retrospective Sound + Vision CD box set prominently featured a CD-V video of Ashes to Ashes, and standalone promo CD-Vs featured the video, plus three audio tracks: "John, I'm Only Dancing", "Changes", and "The Supermen".

What were CD size "single"-style discs called that were compatible with LaserDisc players?
Output: CD Video (CD-V) discs, and Video Single Discs (VSD)


Input: Article: Summers are generally warm and sometimes hot. London's average July high is 24 °C (75.2 °F). On average London will see 31 days above 25 °C (77.0 °F) each year, and 4.2 days above 30.0 °C (86.0 °F) every year. During the 2003 European heat wave there were 14 consecutive days above 30 °C (86.0 °F) and 2 consecutive days where temperatures reached 38 °C (100.4 °F), leading to hundreds of heat related deaths. Winters are generally cool and damp with little temperature variation. Snowfall does occur from time to time, and can cause travel disruption when this happens. Spring and autumn are mixed seasons and can be pleasant. As a large city, London has a considerable urban heat island effect, making the centre of London at times 5 °C (9 °F) warmer than the suburbs and outskirts. The effect of this can be seen below when comparing London Heathrow, 15 miles west of London, with the London Weather Centre, in the city centre.

Now answer this question: Approximately how many days in a given year will London experience temperatures above 25 degrees Celsius (or 77 degrees Farenheit?

Output: 31


Article: The University of Bath and Bath Spa University are higher education establishments in the north-east of the county. The University of Bath gained its Royal Charter in 1966, although its origins go back to the Bristol Trade School (founded 1856) and Bath School of Pharmacy (founded 1907). It has a purpose-built campus at Claverton on the outskirts of Bath, and has 15,000 students. Bath Spa University, which is based at Newton St Loe, achieved university status in 2005, and has origins including the Bath Academy of Art (founded 1898), Bath Teacher Training College, and the Bath College of Higher Education. It has several campuses and 5,500 students.

Question: Bath school of pharmacy founded in 
Ans: Bath School of Pharmacy (founded 1907


Here is a question about this article: IBM has constantly evolved since its inception. Over the past decade, it has steadily shifted its business mix by exiting commoditizing markets such as PCs, hard disk drives and DRAMs and focusing on higher-value, more profitable markets such as business intelligence, data analytics, business continuity, security, cloud computing, virtualization and green solutions, resulting in a higher quality revenue stream and higher profit margins. IBM's operating margin expanded from 16.8% in 2004 to 24.3% in 2013, and net profit margins expanded from 9.0% in 2004 to 16.5% in 2013.
What is the answer to this question: What were the net profit margins of IBM in 2004?
****
So... 9.0%


Article: The most obvious function of clothing is to improve the comfort of the wearer, by protecting the wearer from the elements. In hot climates, clothing provides protection from sunburn or wind damage, while in cold climates its thermal insulation properties are generally more important. Shelter usually reduces the functional need for clothing. For example, coats, hats, gloves, and other superficial layers are normally removed when entering a warm home, particularly if one is residing or sleeping there. Similarly, clothing has seasonal and regional aspects, so that thinner materials and fewer layers of clothing are generally worn in warmer seasons and regions than in colder ones.

Question: What type of material tends to be worn in warmer seasons?
Ans:
thinner