Question: Tula Paulina "Tulisa" Contostavlos was a judge on a show created by who?

Context paragraphs:
The Fruits of Enlightenment: Tolstoy created the first, incomplete draft of the play in 1886, along with "The Power of Darkness".  Three years later, his children and wife persuaded him to complete the manuscript sufficiently for a house performance in Yasnaya Polyana.  Tolstoy initially denied the proposal but quickly took the lead in directing the amateur actors; the cast included twenty six of his children, two nieces, a court prosecutor from Tula and a judge from Moscow.  This first performance was held December 30, 1889.  According to Sergei Tolstoy, the 1889 play deliberately reflected the realities of Yasnaya Polyana and the neighboring country estates, even using the real names of Tula gentry for the stage characters (these names were replaced with purely fictitious ones later).  The first performance washed out the border between imaginary characters and the real personalities playing them, removing the fourth wall between actors and the audience; it has never since been reproduced in this form.  The audience received the play well, and it was reproduced by Tula amateurs, including Tatyana Tolstaya, in April 1890, with the proceeds donated to a local orphanage.  The second performance was attended by Maly theatre actor Alexander Yuzhin and independent theatre director Vladimir Nemirovich-Danchenko.

Spaceship (Tinchy Stryder and Dappy song): "Spaceship" is a single by recording artist Tinchy Stryder and hip hop vocalist Dappy.  It was meant to be the first single released from his fourth studio album entitled, "Full Tank" but Full Tank was scrapped making it a non-album single.  It was released on 12 June 2011 as a digital download.  The single features vocals from Rapper/singer Dappy of N-Dubz, as well as uncredited back up vocals from Tulisa Contostavlos, also from N-Dubz.  This is Tinchy Stryder's first top five single since 2009.

Big Fat Gypsy Gangster: Big Fat Gypsy Gangster is a straight-to-DVD British comedy film directed, produced, written by and starring Ricky Grover.  The film centres on Grover's character Bulla from "The 11 O'Clock Show", after his release from prison.  The film was written by Grover and his wife Maria, and has an all-star line up including Steven Berkoff, Peter Capaldi, Omid Djalili, Rufus Hound and Tulisa Contostavlos.

The X Factor (UK series 11): The X Factor is a British television music competition to find new singing talent.  The eleventh series began airing on ITV on 30 August 2014 and finished on 14 December 2014.  Dermot O'Leary presented his eighth series of the main show on ITV and Sarah-Jane Crawford presented spin-off show "The Xtra Factor" on ITV2, replacing Caroline Flack and Matt Richardson.  Louis Walsh was the only judge from series 10 to return and was joined by former judges Simon Cowell, and Cheryl Fernandez-Versini, and new judge Mel B.  Sharon Osbourne, Gary Barlow and Nicole Scherzinger left after series 10.  Former judge Tulisa returned as a guest judge for the final on 13 December due to Mel B being ill.  The series also saw the lower age limit decreased from 16 to 14, as it was in series 4 and 5.  This was Walsh's final series as a judge before returning in series 13.  It was also the only series in which Mel B was a main judge.  It was O'Leary's final series as presenter on the main show, as he announced on 27 March 2015 that he was leaving to pursue other projects, before returning in series 13.  On 11 May, Crawford also confirmed via Twitter that she would leave her position as "The Xtra Factor" presenter.

Tulisa: Tula Paulina "Tulisa" Contostavlos (born 13 July 1988) is an English singer-songwriter, former X Factor judge, actress, and television personality.  Tulisa is known for her role in "Demons Never Die", for her debut single as a solo artist titled "Young", and for being a part of N-Dubz.

The X Factor (UK TV series): The X Factor is a British reality television music competition to find new singing talent.  The contestants are aspiring singers drawn from public auditions.  Created by Simon Cowell, the show began in 2004 and has since aired annually from August/September until December.  The show is produced by FremantleMedia's Thames (previously Talkback Thames) and Cowell's production company Syco Entertainment .  It is broadcast on the ITV network in the UK and simulcast on TV3 in Ireland.  "X Factor" refers to the undefinable "something" that makes for star quality.  The series consists of auditions, bootcamp, judges' houses, several weeks of live shows, semi-finals and the final.  The series had a spin-off behind-the-scenes show called "The Xtra Factor", which aired directly after the main show on ITV2.  This lasted from series 1 until series 13 when it was cancelled by ITV in January 2017.

The X Factor (UK series 8): The X Factor is a British television music competition to find new singing talent.  The eighth series commenced airing on ITV on 20 August 2011 and ended on 11 December 2011.  The winner was Little Mix, a four-piece girl group known earlier in the series as Rhythmix, consisting of members Jesy Nelson, Perrie Edwards, Leigh-Anne Pinnock, and Jade Thirlwall.  They became the first act in the groups category to win in the UK show's history with new judge Tulisa emerging as their winning mentor.  Dermot O'Leary presented the main show on ITV, while Caroline Flack and series 6 runner-up Olly Murs co-presented the spin-off show "The Xtra Factor" on ITV2, replacing Konnie Huq from the previous year.  Louis Walsh returned to the judging panel and was joined by Gary Barlow, Kelly Rowland and Tulisa.  Barlow, Rowland and Tulisa joined the panel as replacements for former judges, Simon Cowell, Dannii Minogue and Cheryl Cole.  Series 5 winner Alexandra Burke served as a guest judge for week 4 of the live shows due to Rowland having a throat infection.

Jeremy Dein: Jeremy Dein QC (born 29 June 1960) is an English barrister specializing in criminal defence.  He has defended many high profile cases, including Tulisa Contostavlos where he succeeded in persuading the trial judge to bring to an end the first ever case of non-stage agent entrapment The main prosecution witness, the “"Fake Sheikh"”, Mazher Mahmood, was referred to the DPP for possible perjury charges following Jeremy’s cross-examination.  Other high profile cases include McCluskie: The "EastEnders" case, where his defendant was accused of having murdered and dismembered Gemma McCluskie, his sister and a former EastEnders star.

Best Behaviour (N-Dubz song): "Best Behaviour" is a song by British hip hop group N-Dubz.  The song was produced by Dino Contostavlos and Richard Rawson and co-written by Tula Contostavlos, Mr Hudson, Tony Dixon, Fazer and Dappy.  It was released on 17 October 2010 as the second single from N-Dubz's third studio album, "Love.Live.Life".  Musically, the song is a R&B ballad with prominent British hip hop characteristics.  The initial writing consisted of the group being inspired to pen a song for their launch in the United States in addition to Dappy's feelings for his girlfriend, Kaye Vassell.  It was inspired by the group's touring lifestyle and their enthusiastic fans.  Lyrically, it is about trading one-night stands with people in favour of real love.

Demons Never Die: Demons Never Die (originally titled Suicide Kids) is a British 2011 slasher film starring Robert Sheehan, Jennie Jacques, Jacob Anderson, Jason Maza, Emma Rigby.  Ashley Walters, Reggie Yates and Tulisa Contostavlos.

Supporting paragraphs: Tulisa The X Factor (UK TV series)
Answer: Simon Cowell