paragraph_text: The finals are broadcast in prime time from CBS Television City in Los Angeles, in front of a live studio audience. The finals lasted eight weeks in season one, eleven weeks in subsequent seasons until seasons ten and eleven which lasted twelve weeks except for season twelve, which lasted ten weeks, and season thirteen, which lasted for thirteen weeks. Each finalist performs songs based on a weekly theme which may be a musical genre such as Motown, disco, or big band, songs by artists such as Michael Jackson, Elvis Presley or The Beatles, or more general themes such as Billboard Number 1 hits or songs from the contestant's year of birth. Contestants usually work with a celebrity mentor related to the theme. In season ten, Jimmy Iovine was brought in as a mentor for the season. Initially the contestants sing one song each week, but this is increased to two songs from top four or five onwards, then three songs for the top two or three.

paragraph_text: Once in Hollywood, the contestants perform individually or in groups in a series of rounds. Until season ten, there were usually three rounds of eliminations in Hollywood. In the first round the contestants emerged in groups but performed individually. For the next round, the contestants put themselves in small groups and perform a song together. In the final round, the contestants perform solo with a song of their choice a cappella or accompanied by a band‍—‌depending on the season. In seasons two and three, contestants were also asked to write original lyrics or melody in an additional round after the first round. In season seven, the group round was eliminated and contestants may, after a first solo performance and on judges approval, skip a second solo round and move directly to the final Hollywood round. In season twelve, the executive producers split up the females and males and chose the members to form the groups in the group round.

paragraph_text: The 1996 British motorcycle Grand Prix was the ninth round of the 1996 Grand Prix motorcycle racing season. It took place on 21 July 1996 at Donington Park.

paragraph_text: With the exception of seasons one and two, the contestants in the semifinals onwards perform in front of a studio audience. They perform with a full band in the finals. From season four to season nine, the American Idol band was led by Rickey Minor; from season ten onwards, Ray Chew. Assistance may also be given by vocal coaches and song arrangers, such as Michael Orland and Debra Byrd to contestants behind the scene. Starting with season seven, contestants may perform with a musical instrument from the Hollywood rounds onwards. In the first nine seasons, performances were usually aired live on Tuesday nights, followed by the results shows on Wednesdays in the United States and Canada, but moved to Wednesdays and Thursdays in season ten.

paragraph_text: During the live shows, a group of acts ranging from only a Top 20 (season two), to as many as 60, compete for viewers' and judges' votes. In the first season, the judges could not end an act's performance, but could either ``check ''or`` X'' the performance during their critique. Since season two (2007), judges have been able to end an act's performance early, and the ``check ''was removed. Generally, acts each perform first in a live round consisting of a series of quarterfinals. In seasons with YouTube auditions, the round of live judging of YouTube finalists takes place then, as part of these quarterfinals. Then there may be additional shows for`` Wild Card'' acts -- acts that one or more of the judges select to be given one more chance for audience vote despite previous elimination. From these shows, the existing group is narrowed through votes by the public and / or the judges (depending on the season). Acts then move on to a semifinal round, and even further rounds (such as a ``Top 8 ''or a`` Top 10'', depending on the season) through a series of weekly shows, which trim the number of acts down each time based on a public vote. In the majority of seasons, judges have had no vote from the semifinals. All these rounds culminate in a live final, which has consisted of anywhere from four to ten acts throughout the seasons. The act with the most votes is declared the winner, given $1 million, and, since season three (2008), a chance to headline a show on the Las Vegas Strip.

paragraph_text: In seasons ten and eleven, a further round was added in Las Vegas, where the contestants perform in groups based on a theme, followed by one final solo round to determine the semi-finalists. At the end of this stage of the competition, 24 to 36 contestants are selected to move on to the semi-final stage. In season twelve the Las Vegas round became a Sudden Death round, where the judges had to choose five guys and five girls each night (four nights) to make the top twenty. In season thirteen, a new round called "Hollywood or Home" was added, where if the judges were uncertain about some contestants, those contestants were required to perform soon after landing in Los Angeles, and those who failed to impress were sent back home before they reached Hollywood.

paragraph_text: American Idol has traditionally released studio recordings of contestants' performances as well as the winner's coronation single for sale. For the first five seasons, the recordings were released as a compilation album at the end of the season. All five of these albums reached the top ten in Billboard 200 which made then American Idol the most successful soundtrack franchise of any motion picture or television program. Starting late in season five, individual performances were released during the season as digital downloads, initially from the American Idol official website only. In season seven the live performances and studio recordings were made available during the season from iTunes when it joined as a sponsor. In Season ten the weekly studio recordings were also released as compilation digital album straight after performance night.

paragraph_text: From the semi-finals onwards, the fate of the contestants is decided by public vote. During the contestant's performance as well as the recap at the end, a toll-free telephone number for each contestant is displayed on the screen. For a two-hour period after the episode ends (up to four hours for the finale) in each US time zone, viewers may call or send a text message to their preferred contestant's telephone number, and each call or text message is registered as a vote for that contestant. Viewers are allowed to vote as many times as they can within the two-hour voting window. However, the show reserves the right to discard votes by power dialers. One or more of the least popular contestants may be eliminated in successive weeks until a winner emerges. Over 110 million votes were cast in the first season, and by season ten the seasonal total had increased to nearly 750 million. Voting via text messaging was made available in the second season when AT&T Wireless joined as a sponsor of the show, and 7.5 million text messages were sent to American Idol that season. The number of text messages rapidly increased, reaching 178 million texts by season eight. Online voting was offered for the first time in season ten. The votes are counted and verified by Telescope Inc.

paragraph_text: Melodifestivalen 1986 was the selection for the 26th song to represent Sweden at the Eurovision Song Contest. It was the 25th time that this system of picking a song had been used. 90 songs were submitted to SVT for the competition. The final was broadcast on TV1 and was not broadcast on radio. No orchestra was used, and instead the ten songs were broadcast as music videos. The five songs that qualified for the second round were performed live to backing track.

paragraph_text: The 2015 United States Grand Prix (formally known as the 2015 Formula 1 United States Grand Prix) was a Formula One motor race that took place on 25 October 2015. The race was contested over fifty-six laps and held at the Circuit of the Americas. It was the sixteenth round of the 2015 season and marked the thirty-seventh time that the United States Grand Prix was run as a round of the World Championship since its inception in , and the fourth time that the event was hosted at this circuit.

paragraph_text: Manny Pacquiao vs. Timothy Bradley, billed as ``Perfect Storm '', was a welterweight title boxing match held on June 9, 2012, at the MGM Grand Garden Arena in Paradise, Nevada. After 12 rounds, Bradley won a highly controversial split decision to take the WBO welterweight title.

paragraph_text: The 1979 Austrian motorcycle Grand Prix was the second round of the 1979 Grand Prix motorcycle racing season. It took place on 29 April 1979 at the Salzburgring circuit.

paragraph_text: When the latest MGM Grand opened on December 18, 1993, it was owned by MGM Grand Inc. At that time it had an extensive Wizard of Oz theme, including the green ``Emerald City ''color of the building and the decorative use of Wizard of Oz memorabilia. After entering the casino's main entrance, one would find themselves in the Oz Casino facing Emerald City. Dorothy, the Scarecrow, the Tin Man, and the Cowardly Lion were seen in front of the city. The Emerald City attraction featured an elaborate yellow brick road walk - through, complete with the cornfield, apple orchard, and haunted forest, as well as audio - animatronic figures of Dorothy, the Scarecrow, the Tin Man, the Cowardly Lion, and the Wicked Witch of the West. It would end at the door of the city, leading inside for a performance of`` The Wizard's Secrets''. When MGM Grand began its extensive refurbishment in 1996, the Oz Casino was the first to go. The Emerald City was completely demolished, and the Emerald City Gift Shop was moved to a new shopping section of the casino. The store remained open until early 2003.

paragraph_text: The 2012 Bahrain Grand Prix (formally known as the 2012 Formula 1 Gulf Air Bahrain Grand Prix) was a Formula One motor race held on 22 April 2012 at the Bahrain International Circuit in Sakhir, Bahrain. It was the first time Formula One returned to Bahrain after the 2011 race was cancelled due to ongoing anti-government protests. The race, the eighth running of the Bahrain Grand Prix, was contested over 57 laps and was the fourth round of the 2012 Formula One season.

paragraph_text: The 1993 Japanese motorcycle Grand Prix was the third round of the 1993 Grand Prix motorcycle racing season. It took place on 18 April 1993, at the Suzuka Circuit.

paragraph_text: This was the first season where the contestants were permitted to perform in the final rounds songs they wrote themselves. In the Top 8, Sam Woolf received the fewest votes, but he was saved from elimination by the judges. The 500th episode of the series was the Top 3 performance night.

paragraph_text: During seasons one through six (2006 -- 11), the live shows were filmed at Stage 36 of CBS Television City in Los Angeles. In season seven (2012), the live shows were held at the New Jersey Performing Arts Center in Newark. From seasons eight through ten (2013 -- 15), live performances were held at Radio City Music Hall in New York. From season eleven (2016) onwards the live shows are being held at the Dolby Theatre.

paragraph_text: Season ten is the first to include online auditions where contestants could submit a 40-second video audition via Myspace. Karen Rodriguez was one such auditioner and reached the final rounds.

paragraph_text: The American Idol Songwriter contest was also held this season. From ten of the most popular submissions, each of the final two contestants chose a song to perform, although neither of their selections was used as the "coronation song". The winning song, "The Time of My Life", was recorded by David Cook and released on May 22, 2008.

paragraph_text: The wildcard round returned in season eight, wherein there were three groups of twelve, with three contestants moving forward – the highest male, the highest female, and the next highest-placed singer - for each night, and four wildcards were chosen by the judges to produce a final 13. Starting season ten, the girls and boys perform on separate nights. In seasons ten and eleven, five of each gender were chosen, and three wildcards were chosen by the judges to form a final 13. In season twelve, the top twenty semifinalists were split into gender groups, with five of each gender advancing to form the final 10. In season thirteen, there were thirty semifinalists, but only twenty semifinalists (ten for each gender) were chosen by the judges to perform on the live shows, with five in each gender and three wildcards chosen by the judges composing the final 13.

Question: When was the MGM Grand built in the city where American Idol contestants performed an additional round in seasons ten and eleven?
Answer: December 18, 1993