Question: In which year were the Back to the Future rides at both Universal Studios theme parks replaced?

Context paragraphs:
Universal Studios Theme Parks Adventure: Universal Studios Theme Parks Adventure, known in Japan as Universal Studios Japan Adventure (ユニバーサル・スタジオ・ジャパン・アドベンチャー , Yunibāsaru sutajio japan adobenchā ) , is a 2001 video game developed and published by Kemco for the Nintendo GameCube.  Set in the Universal Studios Japan park, the object of the game is to complete several mini-games loosely based on the real-life attractions , Jaws, Jurassic Park River Adventure, E.T. Adventure, Backdraft, Wild, Wild, Wild West Stunt Show and .  There is also a Movie Quiz, in which the player must answer trivia questions about the Universal Studios films.

The Simpsons Ride: "The Simpsons" Ride is a simulator ride featured at the Universal Studios Florida and Universal Studios Hollywood theme parks.  The ride is based on the animated television series "The Simpsons".  It was first announced in 2007 and replaced the "" at both locations.  The ride at Universal Studios Florida soft opened on April 23, 2008, and the official ceremonies took place on May 15.  The ride at Universal Studios Hollywood opened on May 19, 2008.  "The Simpsons" Ride was collaborated on by the producers of "The Simpsons", and uses CGI animation, which was provided by Blur Studio and Reel FX.  2D animation was provided by Film Roman.  The ride uses state of the art technology, including a new projection system and new hydraulics.

Flight of the Hippogriff: Flight of the Hippogriff is a junior roller coaster in The Wizarding World of Harry Potter section at three theme parks – Universal Studios Japan, Universal Studios Hollywood, and Islands of Adventure of Universal Studios Florida.  Designed by Universal Creative, the first installation opened at Islands of Adventure on June 18, 2010.  The new ride was a redesign of an existing roller coaster known as Flying Unicorn, which the park closed in 2008 to begin its transformation.  The design change was implemented to fit the new "Harry Potter" themed area that was being constructed at the park.  Flight of the Hippogriff is a mild alternative to the area's more extreme rides such as Dragon Challenge and Harry Potter and the Forbidden Journey.  Following a successful launch, identical versions of the roller coaster were installed at Universal Studios Japan and Universal Studios Hollywood over the next several years.

Universal CityWalk: Universal CityWalk are the entertainment and retail districts located adjacent to the theme parks of Universal Parks & Resorts.  CityWalk began as an expansion of Universal's first park, Universal Studios Hollywood, and serves as an entrance plaza from the parking lots to the theme parks.  CityWalk can also be found at the Universal Orlando Resort and Universal Studios Japan in Osaka, Japan.

Back to the Future: The Ride: Back to the Future: The Ride was a simulator ride at Universal Studios theme parks.  It was based on and inspired by the "Back to the Future" film series and is a mini-sequel to 1990's "Back to the Future Part III".  It was previously located at Universal Studios Florida and Universal Studios Hollywood, where it has since been replaced by "The Simpsons Ride", and at Universal Studios Japan where it has since been replaced by "".

Universal Studios Japan: Universal Studios Japan (ユニバーサル・スタジオ・ジャパン , "Yunibāsaru Sutajio Japan" ) , located in Osaka, is one of four Universal Studios theme parks, owned and operated by USJ Co., Ltd., which is wholly owned by NBCUniversal (as of 2017).  The park is similar to the Universal Orlando Resort since it also contains selected attractions from Universal Orlando Resort and Universal Studios Hollywood.

Universal Parks &amp; Resorts: Universal Parks & Resorts, also known as Universal Studios Theme Parks or solely Universal Theme Parks, is the theme park subsidiary of NBCUniversal.  The subsidiary, headquartered in Orlando, Florida, operates Universal theme parks and resort properties around the world.  Universal Parks & Resorts is best known for attractions and lands based on famous classic and modern pop culture properties (movies, television, literature, cartoons, comics, video games, music, etc.) from not only NBCUniversal, but also third-party companies, for all of its parks.

Universal Studios South Korea: Universal Studios Korea (USK; 유니버설 스튜디오 코리아) is a cancelled theme park to constructed in the vicinity of Hwaseong, South Korea.  If the park was constructed, become the fifth Universal Studios theme park in the world, and the fourth in Asia, after Universal Studios Japan, Universal Studios Singapore, and Universal Studios Beijing upon its projected opening in 2020.  On 23 December 2015, Universal Studios Korea consortium led by China’s largest state-run builder, China State Construction Engineering Corporation, and its largest state-run tourist agency, China Travel Services, won the bidding for the project held by K-Water, the owner of the project site.  The consortium also includes the Korean construction firm Daewoo E&C and Korean engineering consulting firm Dohwa Engineering as well as Universal Studios Korea Property Holdings.

List of Universal Studios Orlando attractions: The Universal Orlando Resort is a theme park resort located in Orlando, Florida.  It features two theme parks, Universal Studios Florida and Islands of Adventure, built on 107 acre and 101 acre of land, respectively.  Both parks feature several attractions and shows based on movies produced by Universal Studios.  After several delays during construction, Universal Studios Florida opened to the public on June 7, 1990; however, several of the parks major attractions experienced frequent mechanical and technical problems, forcing the rides to close.  Eventually, Universal filed a lawsuit against the manufacturer of Jaws, an attraction that was based on the film.  Three years later, Universal announced the construction of a second theme park, Islands of Adventure, that officially opened on May 28, 1999.

Universal Studios Hollywood: Universal Studios Hollywood is a film studio and theme park in the San Fernando Valley area of Los Angeles County, California.  About 70% of the studio lies within the unincorporated county island known as Universal City while the rest lies within the city limits of Los Angeles, California.  It is one of the oldest and most famous Hollywood film studios still in use.  Its official marketing headline is "The Entertainment Capital of LA".  It was initially created to offer tours of the real Universal Studios sets and is the first of many full-fledged Universal Studios Theme Parks located across the world.

Supporting paragraphs: Back to the Future: The Ride The Simpsons Ride
Answer: 2008