Stephen White was the writer for most episodes of the children's television show "Barney & Friends" through 2006, most of the "Barney" home videos, as well as many books based on the series, scripts for Barney's concerts, and the film "Barney's Great Adventure".
 In addition, he appeared in the 1992 episode "Treasure of Rainbow Beard" as Rainbow Beard himself.
 in 1993 White was the senior writer from "".
The Blue Peter pets are animals that regularly appear on the long-running BBC children's television series "Blue Peter".
 For 27 years, when not on TV, these pets were often looked after by "Blue Peter"'s long-standing pet keeper Edith Menezes, who died in 1994.
 The first pet was a dog named Petra in 1962, and since then there have been several dogs, cats, tortoises, and parrots, and horses Joe And Simon.
 The current animals on the show are Shelley the tortoise and Iggy the trainee guide dog puppy.
 Rags, a pony, named by viewers, was purchased with the proceeds of a Christmas appeal in the late 1970s as a Riding for the Disabled horse.
 The Blue Peter parrot—Joey, and one successor, Barney—featured in the 1960s, but when Barney, a blue-fronted amazon, died, he was not replaced.
 In a 1986 documentary shown on BBC2 as part of the Did You See...?
 series, former presenter Peter Purves recalled that Biddy Baxter, the show's editor, had called him in floods of tears the day the first parrot Joey died.
 He went on to muse in the same interview that had he himself died, Baxter would have been far less upset.
 The original ideas behind featuring the programme's pets were to teach viewers who had animals of their own how to look after them, and for the creatures to act as surrogate pets for those that did not own any.
 For example, dog training items, tortoise hibernation, and cat care are often featured on the programme; however, the keeping of rabbits and mice was deemed not suitable as they do not live long.
 In addition, dogs that lived with the presenters often accompanied them on filming assignments.
Selena Marie Gomez ( ; ] ; born July 22, 1992) is an American singer and actress.
 Gomez began her career starring in the children's television series "Barney & Friends".
 She rose to fame playing the lead role of Alex Russo in the Disney Channel series "Wizards of Waverly Place" (2007–2012).
 She also starred in films such as "Ramona and Beezus" (2010), "Monte Carlo" (2011), and "Spring Breakers" (2013).
Michaela Dietz is an actress and voice actress whose professional career started in 2005.
 She is known for playing the role of Riff on the PBS children's television series "Barney & Friends" and as the voice of Amethyst on the Cartoon Network television series "Steven Universe".
Twenty Twenty are a pop punk band based in London, Cambridge and Essex, UK.
 They are made up of lead vocalist/guitarist Sam Halliday, brother and bassist/vocalist Jack Halliday, and drummer/vocalist Sonny Watson-Lang.
 The band have supported acts such as The Wanted, The Saturdays, Avril Lavigne, Scouting For Girls, Big Time Rush and Selena Gomez.
 Festival appearances have included playing with JLS, Diversity, and McFly.
 July 2010 saw the band play at the O2 Arena with The Saturdays, and Tinchy Stryder.
 In early 2011 Twenty Twenty supported The Saturdays on a UK tour throughout February and March and supported The Wanted in March and April.
 17 April 2011 saw the release of the band's new single and their first release signed to a major label.
 Their debut album "Small Talk" was released on 2 May 2011.
Barney's Great Adventure (also known by its promotional title Barney's Great Adventure: The Movie) is a 1998 American musical adventure film based on the children's television series "Barney & Friends", featuring the character Barney the Dinosaur.
 The film was written by Stephen White, directed by Steve Gomer, produced by Sheryl Leach and Lyrick Studios and released by PolyGram Filmed Entertainment on March 27, 1998 in the United States and Canada at the height of Barney's popularity.
Barney & Friends is an American children's television series aimed at children from ages 1 to 8, created by Sheryl Leach and produced by HIT Entertainment.
 It premiered on PBS on April 6, 1992.
 The series features the title character Barney, a purple anthropomorphic tyrannosaurus rex who conveys educational messages through songs and small dance routines with a friendly, optimistic attitude.
 Production of new episodes originally ceased on September 18, 2009, although reruns of the series were still shown on several PBS stations in following years.
 Reruns aired for 10 years on Sprout from 2005 until 2015.
 A revival of the series is set for a 2017 launch.
Eloise Mignon (born 18 September 1986) is an Australian actress.
 She began her career starring in children's television shows: "The Legacy of the Silver Shadow" and "Silversun" well as the well known Australian soap opera "Neighbours".
 She is a triple national, possessing citizenship of Australia, France and Kuwait
Remotely Funny is a British children's game show hosted by Sara Forsberg.
 The show is produced by Twenty Twenty Kids for CBBC.
 The show features three children from across the United Kingdom connected remotely via webcam competing in various challenges to win points known as 'Samojis'.
 The series began on 13 February 2017.
Kathryn "Kathy" O'Rourke Parker is a children's educational television producer and writer, best known for being co-creator of the popular children's show "Barney & Friends" with Sheryl Leach and Dennis DeShazer.
 Kathy received her B.S. in Special Education in 1976 and an M.A. in Learning Disabilities in 1979, both from Eastern Michigan University.
 She taught in the field of special education in Michigan from 1976 to 1981, before moving to the state of Texas.
 From 1981 to 1987 she worked at DLM, Inc. of Allen, Texas marketing early childhood educational products and materials.
 Then, in 1987, personal friends Parker and Leach began working together on the idea that would become "Barney & Friends".

Question: Which act did the band Twenty Twenty support who began her career starring in the children's television series "Barney & Friends"?
Answer: Selena Gomez