question: when is the release date of the sequel of the series in which the title character is the sonic the hedgehog?
answer: October 18, 1994
context: Title: Jaleel White
  Passage: Jaleel Ahmad White (born November 27, 1976) is an American actor.  In 1989, he was cast in the role of Steve Urkel on the sitcom "Family Matters".  The character, which was originally intended to be a one-time guest appearance, was an instant hit with audiences and White became a regular cast member.  The series aired for a total of nine seasons, from 1989 to 1997 on ABC, and from 1997 to 1998 on CBS.  Aside from this character, White is also known as the voice of Sonic the Hedgehog in the animated series "Adventures of Sonic the Hedgehog", "Sonic (SatAM)" and "Sonic Underground".  He reprised the voice of Sonic in the 2013 fan film, "Sonic".
  Title: Doctor Eggman
  Passage: Dr. Ivo "Eggman" Robotnik (ドクター・エッグマン , Dokutā Egguman , ロボトニック "Robotonikku") is a fictional character and the main antagonist of Sega's "Sonic the Hedgehog" series.  His original character designer was Naoto Ohshima, who created the character as part of many design choices for the company's new mascot.  After the creation of Sonic the Hedgehog, Ohshima chose to use his previous egg-shaped character to create the antagonist of the 1991 video game, "Sonic the Hedgehog", as well as making him become the archenemy of the series' titular main character.
  Title: Sonic Rush
  Passage: Sonic Rush (ソニック・ラッシュ , Sonikku Rasshu ) is a 2005 platform handheld video game developed by Sonic Team and Dimps for the Nintendo DS as part of Sega's "Sonic the Hedgehog" series.  It was released on November 15, 2005 in North America, November 18 in the PAL region, and November 23 in Japan.  It is a 2D platform game, but Sonic's and Blaze's sprites are rendered in 3D, creating a 2.5D effect.  Boss battles, along with a Sonic-exclusive special stage, are entirely 3D.  The game's storyline follows the intertwining adventures of a new character, Blaze the Cat, and the series' main character, Sonic the Hedgehog.  They respectively battle Doctor Eggman and his doppelgänger Eggman Nega at certain points.  The game was announced under the working title "Sonic DS" at Electronic Entertainment Expo (E3) 2004, and under "Sonic Rush" at E3 2005.  The game's 2.5D format was based on Sonic Team's idea to combine elements from 2D and 3D games in the series.  Upon release, "Sonic Rush" was well-received by critics, with praise stemming from the game's music and similarity to older games in the series and criticism stemming from its overall quickness.  A sequel, "Sonic Rush Adventure", was later created and released in 2007.
  Title: Sonic &amp; Knuckles
  Passage: Sonic & Knuckles is a platform game developed by Sonic Team and published by Sega for the Sega Genesis.  Released on October 18, 1994, it is an installment in the main "Sonic the Hedgehog" series and a direct sequel to "Sonic the Hedgehog 3", which released earlier that year.  It follows Sonic the Hedgehog and Knuckles the Echidna in their respective quests to save Angel Island; Sonic tries to prevent Dr. Robotnik from relaunching his orbital weapon, the Death Egg, while Knuckles scuffles with Robotnik's minion, known as EggRobo.
  Title: List of Sonic the Hedgehog characters
  Passage: The "Sonic the Hedgehog" video game franchise began in 1991 with the game "Sonic the Hedgehog" for the Sega Genesis, which pitted a blue anthropomorphic hedgehog named Sonic against a rotund male human villain named Doctor Eggman (or Doctor Ivo Robotnik).  The sequel, "Sonic 2", gave Sonic a fox friend named Tails.  Shortly afterward, "Sonic CD" introduced Amy Rose, a female hedgehog with a persistent crush on Sonic, and "Sonic 3" introduced Knuckles the Echidna, Sonic's rival and, later, friend.  All five of these have remained major characters and appeared in dozens of games.
  Title: Sonic the Hedgehog: Triple Trouble
  Passage: Sonic the Hedgehog: Triple Trouble, released in Japan as Sonic & Tails 2 (ソニック＆テイルス２ , Sonikku to Teirusu Tsū ) is a platform video game developed by Aspect and published by Sega for the Game Gear in 1994.  It is the sequel to "Sonic the Hedgehog Chaos" and takes place during the events of "Sonic the Hedgehog 3".  The game received mixed reviews, with critics commenting that the game was enjoyable, but too easy, and had too little to make it stand out from previous "Sonic" games.  "Sonic the Hedgehog: Triple Trouble" was re-released on the Nintendo 3DS Virtual Console in March 2012.
  Title: Sonic Adventure 2
  Passage: Sonic Adventure 2 is a 2001 platform video game developed by Sonic Team USA and published by Sega.  The sequel to "Sonic Adventure" (1998)"," it was the final "Sonic the Hedgehog" game for the Dreamcast after Sega discontinued the console.  It features two good-vs-evil stories: Sonic the Hedgehog, Miles "Tails" Prower and Knuckles the Echidna attempt to save the world, while Shadow the Hedgehog, Doctor Eggman and Rouge the Bat attempt to conquer it.  The stories are divided into three gameplay styles: fast-paced platforming for Sonic and Shadow, multi-directional shooting for Tails and Eggman, and action-exploration for Knuckles and Rouge.
  Title: Sonic the Hedgehog (character)
  Passage: Sonic the Hedgehog (Japanese: ソニック・ザ・ヘッジホッグ , Hepburn: Sonikku za Hejjihoggu ) is the title character and protagonist of the "Sonic the Hedgehog" series released by Sega, as well as numerous spin-off comics, five animated shows, and an animated OVA.
citations: Sonic &amp; Knuckles Sonic the Hedgehog (character)