rajpurkar/squad huggingface dataset:
Title: MP3

The initial near-complete MPEG-1 standard (parts 1, 2 and 3) was publicly available on 6 December 1991 as ISO CD 11172. In most countries, patents cannot be filed after prior art has been made public, and patents expire 20 years after the initial filing date, which can be up to 12 months later for filings in other countries. As a result, patents required to implement MP3 expired in most countries by December 2012, 21 years after the publication of ISO CD 11172.

Question: What became publicly available on 6 December 1991?
Answer: MPEG-1 standard

Question: When can patents not be filed in most countries?
Answer: after prior art has been made public

Question: How long does it take for patents to expire after being filed?
Answer: 20 years

Question: How long can it take for patents to be approved after initially being filed?
Answer: 12 months

Question: When did patents required to implement MP3 expire in most countries?
Answer: December 2012
Title: MP3

An exception is the United States, where patents filed prior to 8 June 1995 expire 17 years after the publication date of the patent, but application extensions make it possible for a patent to issue much later than normally expected (see submarine patents). The various MP3-related patents expire on dates ranging from 2007 to 2017 in the U.S. Patents filed for anything disclosed in ISO CD 11172 a year or more after its publication are questionable. If only the known MP3 patents filed by December 1992 are considered, then MP3 decoding has been patent-free in the US since 22 September 2015 when U.S. Patent 5,812,672 expired which had a PCT filing in October 1992. If the longest-running patent mentioned in the aforementioned references is taken as a measure, then the MP3 technology will be patent-free in the United States on 30 December 2017 when U.S. Patent 5,703,999, held by the Fraunhofer-Gesellschaft and administered by Technicolor, expires.

Question: How long does it take for patents to expire in the United States?
Answer: 17 years after the publication date

Question: A patent issue much later than normally expected can be referred to as what?
Answer: submarine patents

Question: What year is the latest that MP3 related patents will expire on in the United States?
Answer: 2017

Question: Who holds the longest running MP3 patent in the United States?
Answer: Fraunhofer-Gesellschaft

Question: Who administered the longest running MP3 patent in the United States?
Answer: Technicolor
Title: MP3

Technicolor (formerly called Thomson Consumer Electronics) claims to control MP3 licensing of the Layer 3 patents in many countries, including the United States, Japan, Canada and EU countries. Technicolor has been actively enforcing these patents.

Question: What was Technicolor's previous name?
Answer: Thomson Consumer Electronics

Question: What patent does Technicolor claim to control?
Answer: Layer 3

Question: What are Technicolor constantly in the process of doing?
Answer: actively enforcing these patents
Title: MP3

In September 1998, the Fraunhofer Institute sent a letter to several developers of MP3 software stating that a license was required to "distribute and/or sell decoders and/or encoders". The letter claimed that unlicensed products "infringe the patent rights of Fraunhofer and Thomson. To make, sell and/or distribute products using the [MPEG Layer-3] standard and thus our patents, you need to obtain a license under these patents from us."

Question: When did the Fraunhofer institute send out a letter?
Answer: September 1998

Question: What did the letter claim would be required to distribute and/or sell decoders and/or encoders?
Answer: a license

Question: What does selling unlicensed products mean that the seller is doing?
Answer: infringe the patent rights of Fraunhofer and Thomson

Question: What can products not use if they want to avoid infringing on patent rights?
Answer: the [MPEG Layer-3] standard
Title: MP3

Sisvel S.p.A. and its U.S. subsidiary Audio MPEG, Inc. previously sued Thomson for patent infringement on MP3 technology, but those disputes were resolved in November 2005 with Sisvel granting Thomson a license to their patents. Motorola followed soon after, and signed with Sisvel to license MP3-related patents in December 2005. Except for three patents, the US patents administered by Sisvel had all expired in 2015, however (the exceptions are: U.S. Patent 5,878,080, expires February 2017, U.S. Patent 5,850,456, expires February 2017 and U.S. Patent 5,960,037, expires 9. April 2017.

Question: Who was sued for patent infringement on MP3 technology?
Answer: Thomson

Question: Who initially sued to protect their patent rights?
Answer: Sisvel S.p.A.

Question: What did Sisvel grant Thomson to end the lawsuit?
Answer: a license to their patents

Question: When did the majority of the patents held by Sisvel expire?
Answer: 2015

Question: When does the last patent held by Sisvel expire?
Answer: 9. April 2017
Title: MP3

In September 2006, German officials seized MP3 players from SanDisk's booth at the IFA show in Berlin after an Italian patents firm won an injunction on behalf of Sisvel against SanDisk in a dispute over licensing rights. The injunction was later reversed by a Berlin judge, but that reversal was in turn blocked the same day by another judge from the same court, "bringing the Patent Wild West to Germany" in the words of one commentator.

Question: What did German officials seize from SanDisk on September 2006?
Answer: MP3 players

Question: At which show did SanDisk have their assets seized?
Answer: IFA

Question: Which company was the Italian patents firm representing?
Answer: Sisvel

Question: What happened after the injunction was successful?
Answer: The injunction was later reversed

Question: The continuous back and forth regarding the decisions on patents was referred to as what?
Answer: bringing the Patent Wild West to Germany
Title: MP3

In February 2007, Texas MP3 Technologies sued Apple, Samsung Electronics and Sandisk in eastern Texas federal court, claiming infringement of a portable MP3 player patent that Texas MP3 said it had been assigned. Apple, Samsung, and Sandisk all settled the claims against them in January 2009.

Question: Who sued Apple, Samsung Electronics and Sandisk in 2007?
Answer: Texas MP3 Technologies

Question: Which court did the lawsuit take place in?
Answer: eastern Texas federal court

Question: What action did the three companies being sued take?
Answer: all settled the claims against them

Question: What year did the lawsuits end?
Answer: 2009

Question: What was the claim that the lawsuit was based on?
Answer: infringement of a portable MP3 player patent
Title: MP3

Alcatel-Lucent has asserted several MP3 coding and compression patents, allegedly inherited from AT&T-Bell Labs, in litigation of its own. In November 2006, before the companies' merger, Alcatel sued Microsoft for allegedly infringing seven patents. On 23 February 2007, a San Diego jury awarded Alcatel-Lucent US $1.52 billion in damages for infringement of two of them. The court subsequently tossed the award, however, finding that one patent had not been infringed and that the other was not even owned by Alcatel-Lucent; it was co-owned by AT&T and Fraunhofer, who had licensed it to Microsoft, the judge ruled. That defense judgment was upheld on appeal in 2008. See Alcatel-Lucent v. Microsoft for more information.

Question: Which company allegedly inherited MP3 patents from AT&T-Bell LAbs?
Answer: Alcatel-Lucent

Question: What kind of patents were allegedly inherited?
Answer: MP3 coding and compression

Question: How many patents did Alcatel claim Microsoft infringed on?
Answer: seven

Question: What subsequently happened after Alcatel was awarded damages?
Answer: The court subsequently tossed the award

Question: How much money was awarded to Alcatel by a San Diego jury?
Answer: US $1.52 billion
Title: MP3

Other lossy formats exist. Among these, mp3PRO, AAC, and MP2 are all members of the same technological family as MP3 and depend on roughly similar psychoacoustic models. The Fraunhofer Gesellschaft owns many of the basic patents underlying these formats as well, with others held by Dolby Labs, Sony, Thomson Consumer Electronics, and AT&T.

Question: AAC, mp3PRO and MP2 are all members of the same technological family as which other lossy format?
Answer: MP3

Question: What model type do all of the lossy formats roughly depend on?
Answer: psychoacoustic

Question: Which company owns many of the patents that cover the other formats?
Answer: Fraunhofer Gesellschaft
Title: MP3

There are also open compression formats like Opus and Vorbis that are available free of charge and without any known patent restrictions. Some of the newer audio compression formats, such as AAC, WMA Pro and Vorbis, are free of some limitations inherent to the MP3 format that cannot be overcome by any MP3 encoder.

Question: Opus and Vorbis are two explans of what kind of compression format?
Answer: open

Question: Being open formats means that Opus and Vorbis can be used without what?
Answer: any known patent restrictions

Question: What are some benefits to some of the newer audio compression formats when compared to MP3?
Answer: free of some limitations inherent to the MP3 format

Question: How can one obtain an open compression format such as Opus or Vorbis?
Answer: available free of charge
Title: MP3

Besides lossy compression methods, lossless formats are a significant alternative to MP3 because they provide unaltered audio content, though with an increased file size compared to lossy compression. Lossless formats include FLAC (Free Lossless Audio Codec), Apple Lossless and many others.

Question: What is a significant alternative to MP3?
Answer: lossless formats

Question: What can lossless formats provide?
Answer: unaltered audio content

Question: What is the downside of using a lossless format?
Answer: increased file size

Question: What is another example of a lossless format other than Apple Lossless?
Answer: FLAC

Question: What does FLAC stand for?
Answer: Free Lossless Audio Codec
Title: House_music

House music is a genre of electronic dance music that originated in Chicago in the early 1980s. It was initially popularized in Chicago, circa 1984. House music quickly spread to other American cities such as Detroit, New York City, and Newark – all of which developed their own regional scenes. In the mid-to-late 1980s, house music became popular in Europe as well as major cities in South America, and Australia. Early house music commercial success in Europe saw songs such as "Pump Up The Volume" by MARRS (1987), "House Nation" by House Master Boyz and the Rude Boy of House (1987), "Theme from S'Express" by S'Express (1988) and "Doctorin' the House" by Coldcut (1988) in the pop charts. Since the early to mid-1990s, house music has been infused in mainstream pop and dance music worldwide.

Question: What city did House music originate from?
Answer: Chicago

Question: What decade did House music first develop?
Answer: 1980s

Question: What year was House music first popularized?
Answer: 1984

Question: What genre does House music fall into?
Answer: electronic dance music

Question: What song by MARRS was an early House hit in 1987?
Answer: "Pump Up The Volume"
Title: House_music

Early house music was generally dance-based music characterized by repetitive 4/4 beats, rhythms mainly provided by drum machines, off-beat hi-hat cymbals, and synthesized basslines. While house displayed several characteristics similar to disco music, it was more electronic and minimalistic, and the repetitive rhythm of house was more important than the song itself. House music in the 2010s, while keeping several of these core elements, notably the prominent kick drum on every beat, varies widely in style and influence, ranging from the soulful and atmospheric deep house to the more minimalistic microhouse. House music has also fused with several other genres creating fusion subgenres, such as euro house, tech house, electro house and jump house.

Question: House music is characterized by what type of beats?
Answer: 4/4 beats

Question: What are some subgenres of House music?
Answer: euro house, tech house, electro house and jump house

Question: What are rhythms provided by in House music?
Answer: drum machines

Question: What are some differences between House and Disco music?
Answer: it was more electronic and minimalistic

Question: What type of music is House based on?
Answer: dance-based music
Title: House_music

In the late 1980s, many local Chicago house music artists suddenly found themselves presented with major label deals. House music proved to be a commercially successful genre and a more mainstream pop-based variation grew increasingly popular. Artists and groups such as Madonna, Janet Jackson, Paula Abdul, Aretha Franklin, Bananarama, Diana Ross, Tina Turner, Whitney Houston, Steps, Kylie Minogue, Bjork, and C+C Music Factoryhave all incorporated the genre into some of their work. After enjoying significant success in the early to mid-90s, house music grew even larger during the second wave of progressive house (1999–2001). The genre has remained popular and fused into other popular subgenres, for example, G-house, Deep House, Tech House and Bass House. As of 2015, house music remains extremely popular in both clubs and in the mainstream pop scene while retaining a foothold on underground scenes across the globe.[citation needed]

Question: When was the second wave of progressive house?
Answer: 1999–2001

Question: What are some popular subgenres of House?
Answer: G-house, Deep House, Tech House and Bass House

Question: where is house music extremely popular?
Answer: both clubs and in the mainstream pop scene

Question: What variation of house music was produced by artists such as Madonna and Kylie Minogue?
Answer: a more mainstream pop-based variation
Title: House_music

Various disco songs incorporated sounds produced with synthesizers and drum machines, and some compositions were entirely electronic; examples include Giorgio Moroder's late 1970s productions such as Donna Summer's hit single "I Feel Love" from 1977, Cerrone's "Supernature" (1977), Yellow Magic Orchestra's synth-disco-pop productions from Yellow Magic Orchestra (1978), Solid State Survivor (1979), and several early 1980s disco-pop productions by the Hi-NRG group Lime.

Question: What instruments did disco songs incorporate from house music?
Answer: synthesizers and drum machines

Question: who produced Donna Summer's hit single "I Feel Love"?
Answer: Giorgio Moroder

Question: what sort of music did Hi-NRG group Lime produce?
Answer: 1980s disco-pop

Question: What year did Cerrone's "Supernature" get released?
Answer: 1977

Question: What year was solid state survivor released?
Answer: 1979
Title: House_music

Soul and disco influenced house music, plus mixing and editing techniques earlier explored by disco, garage music and post-disco DJs, producers, and audio engineers such as Walter Gibbons, Tom Moulton, Jim Burgess, Larry Levan, Ron Hardy, M & M, and others who produced longer, more repetitive, and percussive arrangements of existing disco recordings. Early house producers such as Frankie Knuckles created similar compositions from scratch, using samplers, synthesizers, sequencers, and drum machines.

Question: What influenced House music?
Answer: Soul and disco

Question: What type of producer was Frankie Knuckles?
Answer: Early house producers

Question: what did Frankie Knuckles use to create his compositions?
Answer: samplers, synthesizers, sequencers, and drum machines
Title: House_music

The electronic instrumentation and minimal arrangement of Charanjit Singh's Synthesizing: Ten Ragas to a Disco Beat (1982), an album of Indian ragas performed in a disco style, anticipated the sounds of acid house music, but it is not known to have had any influence on the genre prior to the album's rediscovery in the 21st century.

Question: What was the name of Charanjit Singh's 1982 album?
Answer: Synthesizing: Ten Ragas to a Disco Beat

Question: What did Singh's album contain?
Answer: Indian ragas performed in a disco style

Question: What year was synthesizing: ten ragas to a disco beat released?
Answer: 1982

Question: What sort of arrangement did Charanjit Singh use on his 1982 album?
Answer: minimal arrangement
Title: House_music

Rachel Cain, co-founder of an influential Trax Records, was previously involved in the burgeoning punk scene and cites industrial and post-punk record store Wax Trax! Records as an important connection between the ever-changing underground sounds of Chicago. As most proto-house DJs were primarily stuck to playing their conventional ensemble of dance records, Frankie Knuckles and Ron Hardy, two influential pioneers of house music, were known for their out-of-bounds behavior. The former, credited as "the Godfather of House," worked primarily with early disco music with a hint of new and different music (whether it was post-punk or post-disco) but still enjoying a variety of music, while the latter produced unconventional DIY mixtapes which he later played straight-on in the music club Muzic Box, boiling with raw energy. Marshall Jefferson, who would later appear with the Chicago house classic "Move Your Body (The House-Music Anthem)," (originally released on Chicago-based Trax Records) got involved in house music after hearing Ron Hardy's music in Muzic Box.

Question: Who is Rachel Cain?
Answer: co-founder of an influential Trax Records

Question: Who were Frankie Knuckles and ron hardy?
Answer: two influential pioneers of house music

Question: what was the nickname of frankie knuckles?
Answer: "the Godfather of House,"

Question: marshall jefferson got involved in house music after hearing whose music?
Answer: Ron Hardy's

Question: what was ron hardy's music released in?
Answer: Muzic Box
Title: House_music

In the early 1980s, Chicago radio jocks The Hot Mix 5, and club DJs Ron Hardy and Frankie Knuckles played various styles of dance music, including older disco records (mostly Philly disco and Salsoul tracks), electro funk tracks by artists such as Afrika Bambaataa, newer Italo disco, B-Boy hip hop music by Man Parrish, Jellybean Benitez, Arthur Baker, and John Robie, and electronic pop music by Kraftwerk and Yellow Magic Orchestra. Some made and played their own edits of their favorite songs on reel-to-reel tape, and sometimes mixed in effects, drum machines, and other rhythmic electronic instrumentation. In this era,

Question: who were the chicago radio jocks that played dance music in the early 1980s?
Answer: The Hot Mix 5

Question: what style of music did man parrish play?
Answer: B-Boy hip hop music

Question: what style of music did afrika bambaataa play?
Answer: electro funk

Question: what style of music did kraftwerk play?
Answer: electronic pop music

Question: how did producers sometimes make edits of house music?
Answer: reel-to-reel tape
Title: House_music

The hypnotic electronic dance song "On and On", produced in 1984 by Chicago DJ Jesse Saunders and co-written by Vince Lawrence, had elements that became staples of the early house sound, such as the Roland TB-303 bass synthesizer and minimal vocals as well as a Roland (specifically TR-808) drum machine and Korg (specifically Poly-61) synthesizer. It also utilized the bassline from Player One's disco record "Space Invaders" (1979). "On and On" is sometimes cited as the 'first house record', though other examples from around that time, such as J.M. Silk's "Music is the Key" (1985), have also been cited.

Question: who produced the song "on and on" in 1984?
Answer: Jesse Saunders

Question: where was jesse saunders from?
Answer: Chicago

Question: who co-wrote the hit song "on and on" in 1984?
Answer: Vince Lawrence

Question: what type of bass synthesizer was a staple of the early house sound?
Answer: Roland TB-303

Question: when was player one's "space invaders" released?
Answer: 1979
Title: House_music

Starting in 1984, some of these DJs, inspired by Jesse Saunders' success with "On and On", tried their hand at producing and releasing original compositions. These compositions used newly affordable electronic instruments to emulate not just Saunders' song, but the edited, enhanced styles of disco and other dance music they already favored. These homegrown productions were played on Chicago-area radio and in local discothèques catering mainly to African-American and gay audiences. By 1985, although the exact origins of the term are debated, "house music" encompassed these locally produced recordings. Subgenres of house, including deep house and acid house, quickly emerged and gained traction.

Question: when was jesse saunders' "on and on" a hit?
Answer: 1984

Question: what type of audience was early disco and dance catered to?
Answer: African-American and gay audiences

Question: what year was house music first used as a genre?
Answer: 1985

Question: what were two big subgenres of house music?
Answer: deep house and acid house

Question: what area radio was house music generally played on?
Answer: Chicago-area radio
Title: House_music

Deep house's origins can be traced to Chicago producer Mr Fingers's relatively jazzy, soulful recordings "Mystery of Love" (1985) and "Can You Feel It?" (1986). According to author Richie Unterberger, it moved house music away from its "posthuman tendencies back towards the lush" soulful sound of early disco music.

Question: what producer was the first to produce deep house? 
Answer: Mr Fingers

Question: where was producer mr. fingers' from?
Answer: Chicago

Question: when was mr. fingers' "mystery of love" released? 
Answer: 1985

Question: when was mr. fingers' "can you feel it?" released?
Answer: 1986
Title: House_music

Acid house arose from Chicago artists' experiments with the squelchy Roland TB-303 bass synthesizer, and the style's origins on vinyl is generally cited as Phuture's "Acid Tracks" (1987). Phuture, a group founded by Nathan "DJ Pierre" Jones, Earl "Spanky" Smith Jr., and Herbert "Herb J" Jackson, is credited with having been the first to use the TB-303 in the house music context. The group's 12-minute "Acid Tracks" was recorded to tape and was played by DJ Ron Hardy at the Music Box, where Hardy was resident DJ. Hardy once played it four times over the course of an evening until the crowd responded favorably. The track also utilized a Roland TR-707 drum machine.

Question: When was Phuture's "Acid Tracks" released?
Answer: 1987

Question: Who founded the group Phuture?
Answer: Nathan "DJ Pierre" Jones, Earl "Spanky" Smith Jr., and Herbert "Herb J" Jackson

Question: what instrument was Phuture the first to use in house music?
Answer: TB-303

Question: how long was phuture's "acid tracks"?
Answer: 12-minute

Question: what type of drum machine did "acid tracks" use?
Answer: Roland TR-707
Title: House_music

Club play from pioneering Chicago DJs such as Hardy and Lil Louis, local dance music record shops such as Importes, State Street Records, Loop Records, Gramaphone Records and the popular Hot Mix 5 shows on radio station WBMX-FM helped popularize house music in Chicago. Later, visiting DJs & producers from Detroit fell into the genre. Trax Records and DJ International Records, Chicago labels with wider distribution, helped popularize house music inside and outside of Chicago. One 1986 house tune called "Move Your Body" by Marshall Jefferson, taken from the appropriately titled "The House Music Anthem" EP, became a big hit in Chicago and eventually worldwide. By 1986, UK labels were releasing house music by Chicago acts, and by 1987 house tracks by Chicago DJs and producers were appearing on and topping the UK music chart. By this time, house music released by Chicago-based labels was considered a must-play in clubs.

Question: what radio station aired the Hot Mix 5 show?
Answer: WBMX-FM

Question: what record labels helped popularize house music?
Answer: Trax Records and DJ International Records

Question: what song by marshall jefferson became a big house hit?
Answer: "Move Your Body"

Question: what european country were big house music hits being released in, in 1987?
Answer: UK

Question: where was house music from chicago-based labels considered a must-play?
Answer: clubs