question: The winner of season 21 of "Dancing with the Stars" stars with her brother in a web series that has how many episodes?
answer: 24
context: Title: Growing Up Wild
  Passage: Growing Up Wild is a 24 episode web series which premiered July 21, 2012 on The Pet Collective on YouTube, starring Robert and Bindi Irwin, children of "The Crocodile Hunter"' s Steve Irwin.  Both Robert and Bindi live at the center of the 1,500 acre Australia Zoo.  This is the thriving animal legacy of their father, and location for this series.  Growing Up Wild features the siblings carrying on the work of their parents, educating audiences to the nature of exotic animals with a particular focus that not every animal makes a suitable domestic pet.
  Title: List of The Most Popular Girls in School episodes
  Passage: "The Most Popular Girls in School" (abbreviated "MPGIS") is an American stop-motion animated comedy web series that debuted on YouTube on May 1, 2012.  Created by Mark Cope and Carlo Moss, the series animates Barbie, Ken and other fashion dolls, usually with customized costumes and hairstyles, as various characters.  "MPGIS" follows the exploits of the fictional Overland Park High School cheerleading squad and their friends, family and enemies. " Variety" described the series as ""Mean Girls" meets "South Park"".  To date, over 80 episodes have been released.  The first episode has been viewed over 8.5 million times, and many episodes have received views in the millions.  After a two year hiatus, the fifth season premiered June 13, 2017.
  Title: Out with Dad (web series)
  Passage: Out With Dad is a Canadian web series created, written, directed, and produced by Jason Leaver.  The series is about a teenage lesbian named Rose and the process of her coming out to her single father.  It has won various web series awards and has screened at numerous festivals, including the Los Angeles Web Series Festival.  In 2017, the fifth season, which consists of 5 episodes, was announced as the final season of the series.
  Title: Bindi Irwin
  Passage: Bindi Sue Irwin (born 24 July 1998) is an Australian-American actress, television personality, conservationist, singer, and dancer.  She is the daughter of the late conservationist and television personality Steve Irwin and his conservationist and author wife Terri Irwin, owner of the Australia Zoo.  Bindi's younger brother is Robert Irwin, a television personality, photographer and grandson of naturist and herpetologist Bob Irwin.  Bindi has been involved in acting, singing, dancing, rapping, game show hosting, and has created two instructional fitness DVDs.  She is also known for winning season 21 of "Dancing with the Stars" (U.S.).
citations: Growing Up Wild Bindi Irwin