Question: What is the Apple iPod 4G?

Context paragraphs:
IPod+HP: The Apple iPod+HP is an Apple iPod 4G with an HP logo on the back, distributed through HP.

List of iPod models: The Apple iPod line has been upgraded many times, and each significant revision is called a "generation".  Only the most recent generation and refurbished units of previous generations of the iPod line are available from Apple for each model (classic, nano, shuffle, touch).  Each new generation usually has more features and refinements while typically being physically smaller and lighter than its predecessor, while usually (but not always) retaining the older model's price tag.  Notable changes include the touch-sensitive click wheel replacing the mechanical scroll wheel, use of color displays, and flash memory replacing hard disks.

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.

HTC Evo 4G LTE: The HTC Evo 4G LTE is an Android smartphone developed by HTC Corporation to be released exclusively by Sprint.  A successor to the previous HTC Evo 4G and 3D models, the Evo 4G LTE supports Sprint's LTE cellular network and its current-generation EV-DO network.  The Evo 4G LTE shares features with its GSM counterpart, the HTC One Xsuch as the same dual-core 1.5 GHz processor used by the One X's LTE variant, a 4.7-inch screen, and Android 4.1 with HTC's Sense 4.0 interface.  The Evo 4G LTE was also the first phone built with an all aluminum frame, leaving only a small plastic piece to allow the Sim and micro sd cards to be installed.

IPod Classic: The iPod Classic (stylized and marketed as iPod classic and formerly just iPod) is a portable media player created and formerly marketed by Apple Inc.

HTC Inspire 4G: The HTC Inspire 4G is the first smartphone available on AT&T Mobility branded as "4G".  It was first announced at CES in January 2011 and was released in February 2011.  The Inspire 4G is a variant of the HTC Desire HD that was sold in Europe so the Inspire has the same design and similar specifications except that the Inspire supports AT&T's HSPA+ 4G network.

IPod game: An iPod click wheel game or iPod game is a video game playable on the various versions of the Apple portable media player, the iPod.  The original iPod had the game "Brick" (originally invented by Apple co-founder Steve Wozniak) included as an easter egg hidden feature; later firmware versions added it as a menu option.  Later revisions of the iPod added three more games in addition to "Brick": "Parachute", "Solitaire", and "Music Quiz".  These games should not be confused with games for the iPod Touch, which require iOS and are only available on Apple's App Store on iTunes.

Samsung Galaxy S 4G LTE: The Samsung Galaxy S 4G LTE also known as the Droid Charge (Verizon), Galaxy S Aviator (U.S. Cellular) and Galaxy S Lightray 4G (MetroPCS, includes DyleTV), is an Android smartphone manufactured by Samsung.  It has a 1 GHz "Hummingbird" processor, front and rear cameras, and CDMA and 4G LTE radios.  It was announced at CES 2011 under the name Samsung Galaxy S 4G LTE device.  It is available from Verizon Wireless.

HTC Amaze 4G: The HTC Ruby (known as the HTC Amaze 4G in United States and Canada) is a smartphone developed by the HTC Corporation.  It was released by T-Mobile in the United States on 10 October 2011.  It was first released in Canada by Telus on 4 November 2011.  Subsequently, other Canadian carriers such as Mobilicity and Wind Mobile have released this phone on 1 December 2011 and 2 December 2011, respectively.  Marketed as being equipped “with the most advanced camera of any smartphone”, the device is armed with an 8-megapixel camera, a 1080p HD video recorder, a backside illuminated sensor for improved low light performance, and a dual LED flash.  In addition to having a great camera, the Amaze 4G features a Qualcomm Snapdragon S3 1.5 GHz dual core processor, a 4.3-inch qHD super LCD multi-touch display, and 1 GB of RAM.  The HTC Amaze 4G was released with version 2.3.4 of the Android operating system.  Starting from May 21, 2012, some HTC Amaze devices were upgradeable to Android 4.0.3 Ice Cream Sandwich.  The HTC Amaze 4G also features a huge resource of aftermarket ROM's.

IPod Touch (5th generation): The fifth generation iPod Touch (stylized and marketed as the iPod touch, and colloquially known as the iPod Touch 5G or iPod Touch 5) was unveiled at Apple's media event alongside the iPhone 5 on September 12, 2012 and was released on October 11, 2012.  An all-purpose pocket computer designed and marketed by Apple Inc. with a touchscreen-based user interface, it succeeded the 4th generation iPod Touch.  It is compatible with up to iOS 9.3.5 which was released on the 25th of August 2016

Supporting paragraphs: IPod+HP IPod Classic
Answer: a portable media player