The X Factor (British TV series)
The X Factor is a British reality television music competition to find new singing talent. Created by Simon Cowell, the show began broadcasting on 4 September 2004 with 445 episodes broadcast over fifteen series as of 2 December 2018. The show is produced by Fremantle's Thames and Cowell's production company Syco Entertainment. It is broadcast on ITV in the UK and simulcast on Virgin Media One in Ireland. "X Factor" refers to the undefinable "something" that makes for star quality. The first three series were presented by Kate Thornton. Since series four, with the exception of series twelve (which was presented by Caroline Flack and Olly Murs), the show has been presented by Dermot O'Leary. "The X Factor" previously had a spin-off behind-the-scenes show called "The Xtra Factor". This aired until 2016. It was replaced by an online spin-off show "Xtra Bites" exclusively on the ITV Hub. The main show was rested in 2019, with Cowell and ITV opting to broadcast "" and "" as mini-series instead. On 7 February 2020, it was announced that the show would be rested during 2020 and would return in 2021.
The X Factor (British TV series)
The original judging panel consisted of Louis Walsh, Sharon Osbourne and Cowell. In 2005, Paula Abdul joined the show as a guest judge whilst Osbourne was away then joined the panel in 2006 for three sets of auditions. Brian Friedman briefly replaced Walsh in the fourth series, which also saw Dannii Minogue join the panel. Friedman left during the auditions, and Walsh replaced Friedman. Cheryl Cole replaced Osbourne in the fifth series. Gary Barlow, Kelly Rowland and Tulisa joined the panel in the eighth series as replacements for Cowell, Minogue and Cole. Rowland left before the ninth series and was replaced by Nicole Scherzinger. Osbourne returned to the panel in the tenth series, replacing Tulisa. Cowell and Cole (later Fernandez-Versini) returned to replace Barlow and Osbourne in eleventh series, while Mel B replaced Scherzinger. In the twelfth series, Mel B and Walsh were replaced by Rita Ora and Nick Grimshaw. For the thirteenth and fourteenth series, Walsh, Osbourne and Scherzinger returned, replacing Grimshaw, Fernandez-Versini and Ora. Following the conclusion of the latter series, Walsh and Scherzinger quit after thirteen and four years respectively, as a judge, and Osbourne announced she would only return for the live shows; before it was later announced that she quit. Louis Tomlinson, Ayda Field (credited as Ayda Williams) and Robbie Williams joined Cowell for the fifteenth series.
Tulisa
Tula Paulinea Contostavlos (Greek: Τούλα Παυλίνα Κοντόσταυλος; born 13 July 1988), known professionally as Tulisa, is an English singer, songwriter, actress, and television personality. As a part of the R&B/hip hop group N-Dubz with her cousin Dappy and friend Fazer, she gained two platinum-certified albums, two gold-certified albums, five MOBO awards, four headlining tours, a Brit Award nomination, thirteen top 40 singles, six silver-certified singles and three Urban Music Awards.
Tulisa
In 2011 and 2012, Tulisa was a judge on "The X Factor UK", she led the "Groups" category in 2011, her winning act being Little Mix, who went on to become the most successful girl group in the X Factor's history. In 2012, Tulisa's success continued with the release of her debut single "Young", which debuted and peaked at number one on the UK Singles Chart. "Live It Up" and "Sight of You" were also hits reaching the top twenty in the UK. In November 2012 she released her debut album "The Female Boss", which peaked at number 35 on the UK Albums Chart. As an actress, Tulisa has starred in the British horror film "Demons Never Die" and the comedy film "Big Fat Gypsy Gangster" in 2011.

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