You will be given a definition of a task first, then some input of the task.
In this task you will be given a question and a passage. You need to determine if the answer to the question is contained in the passage. If the answer can be found in the passage you should output 'True'. If the answer cannot be found in the passage you should output 'False'.

Passage: 'Madison Nicole Ziegler (born September 30, 2002), better known as Maddie Ziegler, is an American dancer, actress and model. She first became known for appearing in Lifetime's reality show Dance Moms from 2011 (at age 8) until 2016. From 2014 to 2016, she gained wider fame for starring in five music videos by Sia, including 'Chandelier' and 'Elastic Heart', which cumulatively have attracted more than 3.4 billion views on YouTube. Ziegler has appeared in films, television and concerts, and has modeled on magazine covers and in advertisements for Capezio, Ralph Lauren and Target, among other brands. She was included by Time magazine on its list of the '30 most influential teens' in each of 2015 and 2016.'. Question: 'how old is the girl in sia music video'.
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
True