Question: What other format was the Greatest Hits released on besides the analog sound storage medium known as LP?

full_context: Document 1: Gramophone record: A gramophone record (phonograph record in the US), commonly known as a vinyl record or simply vinyl or record, is an analog sound storage medium in the form of a flat polyvinyl chloride (previously shellac) disc with an inscribed, modulated spiral groove. The groove usually starts near the periphery and ends near the center of the disc.
Document 2: Greatest Hits (The Who album): Greatest Hits is a greatest hits album by British rock band The Who that was released on 21 December 2009. The album was also re-released as Greatest Hits & More several weeks after the initial release, which featured a second disc of live songs culled from "Greatest Hits Live".
Document 3: Greatest Hits (Diana Ross album): Greatest Hits is a 1972 compilation album released by American singer Diana Ross on Motown. Due to Ross' strong popularity in the UK, Motown's UK label Tamla-Motown, issued this best-of only in England and Australia. A compilation album of Ross' early solo hits wouldn't be issued in her homeland America until 1976; "Diana Ross' Greatest Hits".
Document 4: Vitaphone: Vitaphone was a sound film system used for feature films and nearly 1,000 short subjects made by Warner Bros. and its sister studio First National from 1926 to 1931. Vitaphone was the last major analog sound-on-disc system and the only one which was widely used and commercially successful. The soundtrack was not printed on the film itself, but issued separately on phonograph records. The discs, recorded at 33 ⁄  rpm (a speed first used for this system) and typically 16 in in diameter, would be played on a turntable physically coupled to the projector motor while the film was being projected, achieving a frequency response of 4300 Hz. Many early talkies, such as "The Jazz Singer" (1927), used the Vitaphone system. The name "Vitaphone" derived from the Latin and Greek words, respectively, for "living" and "sound".
Document 5: Album: An album is a collection of audio recordings issued as a single item on CD, record, audio tape or another medium. Albums of recorded music were developed in the early 20th century, first as books of individual 78rpm records, then from 1948 as vinyl LP records played at 33 ⁄  rpm. Vinyl LPs are still issued, though in the 21st-century album sales have mostly focused on compact disc (CD) and MP3 formats. The audio cassette was a format used alongside vinyl from the 1970s into the first decade of the 2000s.
Document 6: Greatest Hits (Westlife album): Greatest Hits is the second greatest hits album and final release by Irish boy band Westlife. It was released on 18 November 2011 by RCA Records and Sony Music. "Greatest Hits" is the group's second greatest hits album following "" (2002). The album is the group's first album not under Syco Music and not under the tutelage of Simon Cowell, having left Syco and Cowell in March 2011. The greatest hits album contains numerous singles that span throughout the band's career, as well as four new songs produced by John Shanks, which includes the lead single "Lighthouse", which was released on 14 November 2011. The compilation was released in two different formats, a standard edition containing the album's eighteen tracks, and a deluxe edition featuring numerous other singles of the band's discography, as well as a DVD containing almost all of the band's music videos.
Document 7: Acetate disc: An acetate disc, is a type of phonograph (gramophone) record, a mechanical sound storage medium, widely used from the 1930s to the late 1950s for recording and broadcast purposes and still in limited use today.
Document 8: Greatest Hits (ZZ Top album): Greatest Hits is a greatest hits album by the American blues rock band ZZ Top, released in 1992. "Viva Las Vegas" and "Gun Love" were two new tracks. It was also released as a vinyl album with two tracks omitted from the CD version ("Cheap Sunglasses" and "I'm Bad, I'm Nationwide").
Document 9: Greatest Hits (1979 Luv' album): Greatest Hits is a compilation album by Dutch girl group Luv' by Philips/Phonogram Records. It was rush-released in 1979 a few weeks after the formation had left Philips to sign a record deal with the labels CNR/Carrere Records. It features hit singles scored in the charts between 1977 and 1979: My Man, U.O.Me, You're the Greatest Lover, Trojan Horse, Casanova and Eeny Meeny Miny Moe. These songs were originally released in their first and second studio albums (With Luv' and Lots Of Luv'). The Philips/Phonogram years were the group's most successful ones in terms of chart performance.
Document 10: Greatest hits album: A greatest hits album, sometimes called a "best of" album or a catalog album, is a compilation of songs by a particular artist or band. Most often the track list contains previously released recordings with a high degree of notability. However, to increase the appeal, especially to people who already own the original release, it is common to include remixes or alternate takes of popular songs; sometimes even new material (previously unreleased) will function as bonus tracks. At times, a greatest hits compilation is the original album release for songs that have themselves been released as a single and charted successfully.
Document 11: Greatest Hits (Depeche Mode album): Greatest Hits is a greatest hits album by English electronic music band Depeche Mode, released in 1987 by Amiga. It was released exclusively in East Germany on LP and cassette.
Document 12: Cardboard record: A cardboard record was a type of cheaply made phonograph record made of plastic-coated thin paperboard. These discs were usually small, had poor audio quality compared to vinyl or acetate discs, and were often only marginally playable due to their light weight, slick surface, and tendency to warp like a taco shell. Playability could be improved by placing a coin between the lock groove and the spindle hole to add weight and stability. These records are distinct from both flexi discs, which are sturdier, and from many of the old home-recording discs since cardboard discs were mass-produced for a specific purpose.
Document 13: LP record: The LP (from "long playing" or "long play") is an analog sound storage medium, a vinyl record format characterized by a speed of 33 ⁄ rpm, a 12 or 10 inch (30 or 25 cm) diameter, and use of the "microgroove" groove specification. Introduced by Columbia in 1948, it was soon adopted as a new standard by the entire record industry. Apart from a few relatively minor refinements and the important later addition of stereophonic sound, it has remained the standard format for vinyl albums.
Document 14: Greatest Hits &amp; Remixes: Greatest Hits & Remixes is a compilation album by British electronic producer and disc jockey Paul Oakenfold, featuring both old and new tracks and remixes from Oakenfold, released in 2007 commemorating his 100th official remix. The album was released in November in the United Kingdom with a double CD set and a triple CD version with the same number of songs, it was also released in the United States with only 20 tracks in one CD, it featured some remixes from the original version but it also included, two new remixes which are; Justin Timberlake's "My Love" song and his remix of Hans Zimmer's "" which was used for the film "" (2007). Releases with the catalogue number "UL 1602-2" included a bonus DVD of a live show and a documentary on Oakenfold.
Document 15: List of number-one EPs in the United Kingdom: In the 1950s and 1960s "a third vinyl format" was introduced alongside long-playing (LP) albums, and singles. The extended play (EP) used the same formats as singles but contained more tracks. Singles were the popular record format at the time – predominantly 10-inch 78 rpm and 7-inch 45 rpm formats – and the first singles chart was published by "New Musical Express" in 1952 with many other publications also producing singles charts in the 1950s and 1960s. "Record Mirror" published the first album chart in 1956 and, when "Record Retailer" began compiling an LP chart on 12 March 1960, they also compiled an EP chart. The EP chart consisted of a top ten and was expanded to fifteen positions the following week, and twenty the week after that. EPs "died out in the late 1960s" and "Record Retailer" reduced the chart to ten positions on 16 April 1966, publishing the final EP chart on 16 December 1967. For six weeks in 1966 and two weeks in December 1967, "Record Retailer" did not publish EP charts but they were compiled and "Record Mirror" published them; "Mirror" had begun publishing charts compiled by "Record Retailer" in March 1962, following a decision to stop compiling their own albums and singles charts.
ground_truth: cassette