Question: What year was the Roald Dahl novel on which a musical starred in by Kerry Ingram was based published?

Context articles: Tales of the Unexpected (short story collection)
Kerry Ingram
The Best of Roald Dahl
Roald Dahl's Esio Trot
The Collected Short Stories of Roald Dahl
Roald Dahl: Collected Stories
Matilda the Musical
Roald Dahl's Willy Wonka (musical)
The Roald Dahl Treasury
Roald Dahl's Guide to Railway Safety

Roald Dahl's Tales of the Unexpected is a collection of sixteen short stories written by British author Roald Dahl and first published in 1979.
 All of the stories were earlier published in various magazines, and then in the collections "Someone Like You" and "Kiss Kiss".
Kerry Danielle Ingram (born 26 May 1999) is an English actress, best known for her role as Shireen Baratheon in the HBO series "Game of Thrones" and Matilda Wormwood in "Matilda the Musical."
The Best of Roald Dahl is a collection of 25 of Roald Dahl's short stories.
 The first edition was published in 1978.
Roald Dahl's Esio Trot is a British comedy television film that was first broadcast as part of BBC One's 2014 Christmas programming.
 It is an adaptation of Roald Dahl's children's novel "Esio Trot" in which a retired bachelor falls in love with his neighbour, a widow, who keeps a tortoise as a companion after the death of her husband.
The Collected Short Stories of Roald Dahl is a 1991 short story collection for adults by Roald Dahl.
 The collection, containing tales of macabre malevolence, comprises many of Dahl's stories seen in the television series "Tales of the Unexpected" and previously collected in "Someone Like You" (1953), "Kiss, Kiss" (1960), "Twenty-Nine Kisses from Roald Dahl" (1969), "Ppo poo face" (1974), and "" (1989).
Roald Dahl: Collected Stories is a hardcover edition of short-stories by Roald Dahl for adults.
 It was published in the US in October 2006 by Random House as part of the Everyman Library.
 The present volume includes for the first time all the stories in chronological order as established by Dahl's biographer, Jeremy Treglown, in consultation with the Dahl estate.
 A few of the short stories were not published chronologically in book form, but appeared later, collected in "More Tales of the Unexpected" (1980).
 The collection contains all of the short stories published in the following collections:
Matilda the Musical is a stage musical based on the 1988 children's novel of the same name by Roald Dahl.
 It was adapted by Dennis Kelly, with music and lyrics by Tim Minchin.
 The musical's narrative centres on Matilda, a precocious 5-year-old girl with the gift of telekinesis, who loves reading, overcomes obstacles caused by her family and school, and helps her teacher to reclaim her life.
 After a twelve-week trial run staged by the Royal Shakespeare Company (RSC) at Stratford-upon-Avon from November 2010 to January 2011, it received its West End premiere on 24 November 2011 at the Cambridge Theatre and its Broadway premiere on 11 April 2013 at the Shubert Theatre.
Roald Dahl's Willy Wonka is a musical that combines elements of both Roald Dahl's book "Charlie and the Chocolate Factory" and of the 1971 movie "Willy Wonka & the Chocolate Factory" with newly created material.
 The musical has several versions: the original version which premiered in 2004, the Junior version, the Kids version, and the Theatre for Young Audiences version.
 All are owned by Music Theatre International, the company that owns the Willy Wonka license.
The Roald Dahl Treasury is an anthology of works of the children's author Roald Dahl.
 It was first published in the United Kingdom in 1997 by Puffin Books.
Roald Dahl's Guide to Railway Safety was published in 1991 by the British Railways Board.
 The British Railways Board had asked Roald Dahl to write the text of the booklet, and Quentin Blake to illustrate it, to help young people enjoy using the railways safely.