Question: What is the name of the latest version of the OS X operating system by the iPod producer?

full_context: Document 1: Macintosh: In 2001, Apple introduced Mac OS X, based on Darwin and NEXTSTEP; its new features included the Dock and the Aqua user interface. During the transition, Apple included a virtual machine subsystem known as Classic, allowing users to run Mac OS 9 applications under Mac OS X 10.4 and earlier on PowerPC machines. Apple introduced Mac OS X 10.8 in February, and it was made available in the summer of 2012. Mountain Lion includes many new features, such as Mission Control, the Mac App Store (available to Mac OS X v10.6.6 "Snow Leopard." users by software update), Launchpad, an application viewer and launcher akin to the iOS Home Screen, and Resume, a feature similar to the hibernate function found in Microsoft Windows. The most recent version is OS X El Capitan . In addition to Mavericks, all new Macs are bundled with assorted Apple-produced applications, including iLife, the Safari web browser and the iTunes media player. Apple introduced Mavericks at WWDC 2013 in June, and released it on October 15 of that year. It is free of charge to everyone running Snow Leopard or later and is compatible with most Macs from 2007 and later. Mavericks brought a lot of the iOS apps, functions, and feel to the Mac as well as better multi display support, iBooks, Maps, app nap, and other upgrades to improve performance and battery life.
Document 2: IPod: The iPod is a line of portable media players and multi-purpose pocket computers designed and marketed by Apple Inc. The first line was released on October 23, 2001, about 8½ months after iTunes (Macintosh version) was released. The most recent iPod redesigns were announced on July 15, 2015. There are three current versions of the iPod: the ultra-compact iPod Shuffle, the compact iPod Nano and the touchscreen iPod Touch.
Document 3: MacOS High Sierra: macOS 10.13 High Sierra A version of the macOS operating system macOS High Sierra desktop Developer Apple Inc. OS family Macintosh Unix Source model Closed, with open - source components Initial release September 25, 2017; 12 months ago (2017 - 09 - 25) Latest release 10.13. 6 (17G2307 / 15P6805) (August 28, 2018; 2 months ago (2018 - 08 - 28)) (±) Update method Mac App Store Platforms x86 - 64 Kernel type Hybrid (XNU) License APSL and Apple EULA and Non-Disclosure Agreement Preceded by macOS 10.12 Sierra Succeeded by macOS 10.14 Mojave Official website macOS High Sierra at the Wayback Machine (archived September 11, 2018) Support status Extended support ends in September 2020. iTunes, in August 2021
Document 4: Macintosh: The Macintosh (pronounced as / ˈmækɪnˌtɒʃ / MAK - in - tosh; branded as Mac since 1998) is a family of personal computers designed, manufactured, and sold by Apple Inc. since January 1984. The original Macintosh was the company's first mass - market personal computer that featured a graphical user interface, built - in screen and mouse. Apple sold the Macintosh alongside its popular Apple II family of computers for almost ten years before they were discontinued in 1993.
Document 5: IPod Shuffle: The iPod Shuffle (stylized and marketed as iPod shuffle) is a digital audio player designed and marketed by Apple Inc. It was the smallest model in Apple's iPod family, and was the first iPod to use flash memory. The first model was announced at the Macworld Conference & Expo on January 11, 2005; the fourth - and final - generation models were introduced on September 1, 2010. The iPod Shuffle was discontinued by Apple on July 27, 2017.
Document 6: MacOS: Launched in 2001 as Mac OS X, the series is the latest in the family of Macintosh operating systems. Mac OS X succeeded ``classic ''Mac OS, which was introduced in 1984, and the final release of which was Mac OS 9 in 1999. An initial, early version of the system, Mac OS X Server 1.0, was released in 1999. The first desktop version, Mac OS X 10.0, followed in March 2001. Releases were code named after big cats from the original release up until OS X 10.8 Mountain Lion. Beginning in 2013 with OS X 10.9 Mavericks, releases have been named after landmarks in California. Apple changed the original name`` Mac OS X'' to ``OS X ''in 2012 and then to`` macOS'' in 2016, adopting the nomenclature that it uses for their other operating systems, iOS, watchOS, and tvOS. The latest version of macOS is macOS High Sierra, which was publicly released in September 2017.
Document 7: IPod: In mid-2015, a new model of the iPod Touch was announced by Apple, and was officially released on the Apple store on July 15, 2015. The sixth generation iPod Touch includes a wide variety of spec improvements such as the upgraded A8 processor and higher-quality screen. The core is over 5 times faster than previous models and is built to be roughly on par with the iPhone 5S. It is available in 5 different colors: Space grey, pink, gold, silver and Product (red).
Document 8: IPod Touch (6th generation): The sixth - generation iPod Touch (stylized and marketed as the iPod touch, and colloquially known as the iPod touch 6G, iPod touch 6, or iPod touch (2015)) is a multipurpose pocket computer designed and marketed by Apple Inc. with a touchscreen - based user interface. It is the successor to the iPod Touch (5th generation), becoming the first major update to the iPod lineup in more than two and a half years. It was released on the online Apple Store on July 15, 2015, along with a new iPod Nano and iPod Shuffle, which received minor upgrades.
Document 9: IPod: In mid-2015, several new color schemes for all of the current iPod models were spotted in the latest version of iTunes, 12.2. Belgian website Belgium iPhone originally found the images when plugging in an iPod for the first time, and subsequent leaked photos were found by Pierre Dandumont.
Document 10: IPod: The iPod is a line of portable media players and multi-purpose pocket computers designed and marketed by Apple Inc. The first version was released on October 23, 2001, about ​ 8 ⁄ months after the Macintosh version of iTunes was released. As of July 27, 2017, only the iPod Touch remains in production.
Document 11: MacBook Pro: The macOS operating system has been pre-installed on all MacBook Pros since release, starting with version 10.4. 4 (Tiger). Along with OS X, iLife has also shipped with all systems, beginning with iLife '06.
Document 12: IPod: Though the iPod was released in 2001, its price and Mac-only compatibility caused sales to be relatively slow until 2004. The iPod line came from Apple's "digital hub" category, when the company began creating software for the growing market of personal digital devices. Digital cameras, camcorders and organizers had well-established mainstream markets, but the company found existing digital music players "big and clunky or small and useless" with user interfaces that were "unbelievably awful," so Apple decided to develop its own. As ordered by CEO Steve Jobs, Apple's hardware engineering chief Jon Rubinstein assembled a team of engineers to design the iPod line, including hardware engineers Tony Fadell and Michael Dhuey, and design engineer Sir Jonathan Ive. Rubinstein had already discovered the Toshiba disk drive when meeting with an Apple supplier in Japan, and purchased the rights to it for Apple, and had also already worked out how the screen, battery, and other key elements would work. The aesthetic was inspired by the 1958 Braun T3 transistor radio designed by Dieter Rams, while the wheel based user interface was prompted by Bang & Olufsen's BeoCom 6000 telephone. The product ("the Walkman of the twenty-first century" ) was developed in less than one year and unveiled on October 23, 2001. Jobs announced it as a Mac-compatible product with a 5 GB hard drive that put "1,000 songs in your pocket."
Document 13: MacOS: macOS is the second major series of Macintosh operating systems. The first is colloquially called the ``classic ''Mac OS, which was introduced in 1984, and the final release of which was Mac OS 9 in 1999. The first desktop version, Mac OS X 10.0, was released in March 2001, with its first update, 10.1, arriving later that year. After this, Apple began naming its releases after big cats, which lasted until OS X 10.8 Mountain Lion. Since OS X 10.9 Mavericks, releases have been named after landmarks in California. Apple shortened the name to`` OS X'' in 2012 and then changed it to ``macOS ''in 2016, adopting the nomenclature that they were using for their other operating systems, iOS, watchOS, and tvOS. The latest version is macOS High Sierra, which was publicly released in September 2017.
Document 14: MacOS: macOS (pronounced / ˌmækoʊˈɛs /; previously Mac OS X and later OS X) is the current series of Unix - based graphical operating systems developed and marketed by Apple Inc. designed to run on Apple's Macintosh computers (``Macs ''). It has been preinstalled on all Macs since 2002. Within the market of desktop, laptop and home computers, and by web usage, it is the second most widely used desktop OS after Microsoft Windows.
Document 15: IPod: Before the release of iOS 5, the iPod branding was used for the media player included with the iPhone and iPad, a combination of the Music and Videos apps on the iPod Touch. As of iOS 5, separate apps named "Music" and "Videos" are standardized across all iOS-powered products. While the iPhone and iPad have essentially the same media player capabilities as the iPod line, they are generally treated as separate products. During the middle of 2010, iPhone sales overtook those of the iPod.
ground_truth: macOS
sub_queries: Which company produces the iPod? Answer: Apple
what is the name of the latest version of Apple 's os x operating system Answer: macOS