Question: What American 3D computer-animated musical fantasy includes an American actress and comedian, with the longest television career of a female entertainer?

Context paragraphs:
Legends of Oz: Dorothy's Return: Legends of Oz: Dorothy's Return is a 2013 American-Indian 3D computer-animated musical fantasy film that is loosely based on the book "Dorothy of Oz" by L. Frank Baum's great-grandson Roger Stanton Baum.  It was directed by Daniel St. Pierre and Will Finn.  The film stars the voices of Lea Michele, Dan Aykroyd, Jim Belushi, Kelsey Grammer, Hugh Dancy, Megan Hilty, Oliver Platt, Patrick Stewart, Bernadette Peters, and Martin Short.

List of accolades received by Moana (2016 film): "Moana" is a 2016 American 3D computer-animated musical fantasy comedy adventure film produced by Walt Disney Animation Studios and released by Walt Disney Pictures.  The film was directed by Ron Clements and John Musker, with Don Hall and Chris Williams as co-directors.  Starring the voices of Auli'i Cravalho and Dwayne Johnson, the film focuses on the story of Moana, the strong-willed daughter of the chief in a Polynesian tribe, who is chosen by the ocean itself to reunite a mystical relic with a goddess.  When a blight strikes her island, Moana sets sail in search of Maui, a legendary demigod, in the hope of saving her people.  The film had its world premiere at El Capitan Theatre in Los Angeles on November 14, 2016 and was released to theaters on November 23, 2016.  The review aggregator Rotten Tomatoes reported 96% positive film-critic reviews, based on 218 reviews, with an average rating of 7.9/10 and Metacritic gave a score of 81 out of 100, based on 44 reviews.

Betty White: Betty Marion White Ludden (known professionally as Betty White; born January 17, 1922) is an American actress and comedian, with the longest television career of a female entertainer.  Regarded as a pioneer of television, she was one of the first women to have control both in front of and behind the camera; and is recognized as the first woman to produce a sitcom, which contributed to her receiving the honorary title "Mayor of Hollywood" in 1955.

Frozen (2013 film): Frozen is a 2013 American 3D computer-animated musical fantasy film produced by Walt Disney Animation Studios and released by Walt Disney Pictures.  It is the 53rd Disney animated feature film.  Inspired by Hans Christian Andersen's fairy tale "The Snow Queen", the film tells the story of a fearless princess who sets off on a journey alongside a rugged iceman, his loyal pet reindeer, and a naïve snowman to find her estranged sister, whose icy powers have inadvertently trapped the kingdom in eternal winter.

Strange Magic (film): Strange Magic is a 2015 American computer-animated musical fantasy romantic comedy film directed by Gary Rydstrom, produced by Lucasfilm, with feature animation by Lucasfilm Animation and Industrial Light & Magic.  The film's screenplay was written by Rydstrom, David Berenbaum and Irene Mecchi, from a story by George Lucas inspired by William Shakespeare's "A Midsummer Night's Dream".  The film stars Alan Cumming, Evan Rachel Wood, Kristin Chenoweth, Maya Rudolph and Alfred Molina.  The score was composed by Marius de Vries and includes contemporary songs, such as "Love Is Strange".

The Polar Express (film): The Polar Express is a 2004 American 3D computer-animated Christmas musical fantasy film based on the 1985 children's book of the same name by Chris Van Allsburg, who served as one of the executive producers on the film.  Written, produced, and directed by Robert Zemeckis, the film features human characters animated using live action motion capture animation.  The film stars Daryl Sabara, Nona Gaye, Jimmy Bennett, and Eddie Deezen, with Tom Hanks in six distinct roles.  The film also included a performance by Tinashe at age 9, who later gained exposure as a pop singer in 2010, as the CGI-model for the female protagonist.

The Lorax (film): The Lorax (also known as Dr. Seuss' The Lorax) is a 2012 American 3D computer-animated musical fantasy–comedy film produced by Illumination Entertainment and based on Dr. Seuss's children's book of the same name.  The film was released by Universal Pictures on March 2, 2012, on the 108th birthday of Dr. Seuss.  The second film adaptation of the book (following the 1972 animated television special), the film builds on the book by expanding the story of Ted, the previously unnamed boy who visits the Once-ler.  The cast includes Danny DeVito as the Lorax, Ed Helms as the Once-ler, and Zac Efron as Ted.  New characters introduced in the film are Audrey (voiced by Taylor Swift), Aloysius O'Hare (Rob Riggle), Mrs. Wiggins, Ted's mother (Jenny Slate), and Grammy Norma (Betty White).

Elena and the Secret of Avalor: Elena and the Secret of Avalor is an American computer-animated musical fantasy adventure crossover television movie between two Disney television series, Disney Junior's "Sofia the First" and Disney Channel's "Elena of Avalor", taking place before the latter series.  It is also the 21st episode of "Sofia the First" - Season 3 and the 74th episode in the series.  It premiered on November 20, 2016, on both Disney Channel and Disney Junior.  The Primetime special was directed and Executive Produced by Jamie Mitchell and Craig Gerber Executive Produced and wrote the screenplay.  The show was honored with a 2017 Emmy nomination for Outstanding Animated Show by the Television Academy.  "The Secret of Avalor" debuted on Disney Channel in the UK on December 3, 2016.

Bruce Forsyth: Sir Bruce Joseph Forsyth-Johnson {'1': ", '2': ", '3': 'CBE', '4': "} (22 February 1928 – 18 August 2017) was a British presenter, actor, comedian, singer, dancer, and screenwriter whose career spanned more than 75 years.  In 2012, "Guinness World Records" recognised Forsyth as having the longest television career for a male entertainer.

The Book of Life (2014 film): The Book of Life is a 2014 American 3D computer-animated musical fantasy adventure comedy film produced by Reel FX Creative Studios and distributed by 20th Century Fox.  Co-written and directed by Jorge R. Gutierrez, it was produced by Aaron Berger, Brad Booker, Guillermo del Toro and Carina Schulze.  The film stars the voices of Diego Luna, Zoe Saldana, Channing Tatum, Christina Applegate, Ice Cube, Ron Perlman and Kate del Castillo.  Based on an original idea by Gutierrez, the story follows a bullfighter who, on the Day of the Dead, embarks on an afterlife adventure to fulfill the expectations of his family and friends.

Supporting paragraphs: The Lorax (film) Betty White
Answer: The Lorax