Question: Lynn Ahrens has written which musical based on the stories of Dr. Seuss?
Context: Lynn Ahrens (born October 1, 1948) is an American writer and lyricist for the musical theatre, television and film.  She has collaborated with Stephen Flaherty for many years.  She won the Tony Award, Drama Desk Award, and Outer Critics Circle Award for the Broadway musical "Ragtime".  Together with Flaherty, they have written many musicals, including "Lucky Stiff", "Once on This Island", "My Favorite Year", "Ragtime", "Seussical", "A Man of No Importance", "Dessa Rose", "The Glorious Ones", and most recently seen on Broadway, "Rocky the Musical". Dr. Seuss' How the Grinch Stole Christmas (promoted theatrically as Dr. Seuss' The Grinch) is an upcoming American 3D computer-animated Christmas musical comedy film produced by Illumination Entertainment.  It is based on the 1957 Dr. Seuss' story of the same name.  The film will be released on November 9, 2018, by Universal Pictures. The Dr. Seuss National Memorial Sculpture Garden is a sculpture garden in Springfield, Massachusetts that honors Theodor Seuss Geisel, better known to the world as Dr. Seuss.  Located at the Quadrangle, the Dr. Seuss National Memorial Sculpture Garden honors the author and illustrator, who was born in Springfield in 1904.  The monument was designed by Lark Grey Dimond-Cates, the author's stepdaughter and created by Sculptor and Artist Ron Henson. 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). Dr. Seuss' The Cat in the Hat is a 2003 American family comedy film directed by Bo Welch.  It is based on the 1957 Dr. Seuss book "of the same name".  The film stars Mike Myers in the title role of the Cat in the Hat, and Dakota Fanning as Sally.  Sally's brother (who is unnamed in the book and the 1971 TV special), Conrad, is portrayed by Spencer Breslin.  The film is the second feature-length Dr. Seuss adaptation after the 2000 holiday film "How the Grinch Stole Christmas". Theodor Seuss Geisel, better known as Dr. Seuss, published over 60 children's books over the course of his long career.  Though most were published under his well-known pseudonym, Dr. Seuss, he also authored over a dozen books as Theo.  LeSieg and one as Rosetta Stone.  As one of the most popular children's authors of all time, Geisel's books have topped many bestseller lists, sold over 222 million copies, and been translated into more than 15 languages.  In 2000, when "Publishers Weekly" compiled their list of the best-selling children's books of all time; 16 of the top 100 hardcover books were written by Geisel, including "Green Eggs and Ham", at number 4, "The Cat in the Hat", at number 9, and "One Fish Two Fish Red Fish Blue Fish", at number 13, and "Dr. Seuss's ABC".  In the years following his death in 1991, several additional books based on his sketches and notes were published, including "Hooray for Diffendoofer Day! " and "Daisy-Head Mayzie".  Although they were all published under the name Dr. Seuss, only "My Many Colored Days", originally written in 1973, was entirely by Geisel. The Wubbulous World of Dr. Seuss is an live-action/puppet television series based on characters created by Dr. Seuss, produced by The Jim Henson Company.  It aired from October 13, 1996 to December 28, 1998 on Nickelodeon.  It is notable for its use of live puppets with digitally animated backgrounds, and in its first season, for refashioning characters and themes from the original Dr. Seuss books into new stories that often retained much of the flavor of Dr. Seuss' own works. A Christmas Carol is a musical with music by Alan Menken, lyrics by Lynn Ahrens, and book by Mike Ockrent and Lynn Ahrens.  The musical is based on Charles Dickens' 1843 novella of the same name.  The show was presented annually at New York City's Paramount Theatre in Madison Square Garden from 1 December 1994 to 27 December 2003. Seussical is a musical by Lynn Ahrens and Stephen Flaherty based on the stories of Dr. Seuss (mainly "Horton Hears a Who! ", "Horton Hatches the Egg" and "Miss Gertrude McFuzz") that debuted on Broadway in 2000.  The play's story is a complex amalgamation of many of Seuss's most famous books.  After a Broadway run, the production spawned two US national tours and a UK tour.  It has become a beloved classic for schools, communities, and regional theatres. Stephen Flaherty (born September 18, 1960) is an American composer of musical theatre.  He works most often in collaboration with the lyricist/bookwriter Lynn Ahrens.  They are best known for writing the Broadway musicals "Once on This Island", which was nominated for eight Tony Awards, "Seussical", which was nominated for the Grammy Award, and "Ragtime", which was nominated for twelve Tony Awards and won Best Original Score.  Flaherty was also nominated for two Academy Awards and two Golden Globe Awards with Lynn Ahrens for his songs and song score for the animated film musical "Anastasia".
Answer: Seussical