Question: What English author, best known for his books about the teddy bear Winnie-the-Pooh and for various poems as well as Wurzel-Flummery is a play performed for the first time in 1917, in London.

Context articles: Kal Mann
A. A. Milne
Wurzel-Flummery
Lefteris Hapsiadis
Hanus G. Johansen
Bobby Bear
Paul Bright (author)
Margot Bennett (actress)
Winnie-the-Pooh
Robin Jarvis

Kal Mann (May 6, 1917 – November 28, 2001) was an American lyricist.
 He is best known for penning the words to Elvis Presley's "Teddy Bear", plus "Butterfly", a hit for both Charlie Gracie and Andy Williams, and "Let's Twist Again", sung by Chubby Checker, which won the Grammy for best Pop Song the year it was released.
Alan Alexander Milne ( ; 18 January 1882 – 31 January 1956) was an English author, best known for his books about the teddy bear Winnie-the-Pooh and for various poems.
 Milne was a noted writer, primarily as a playwright, before the huge success of Pooh overshadowed all his previous work.
 Milne served in both World Wars, joining the British Army in World War I, and was a captain of the British Home Guard in World War II.
Wurzel-Flummery is a play by A. A. Milne, which was performed for the first time in 1917, in London.
Lefteris Hapsiadis (Greek: Λευτέρης Χαψιάδης , born October 23, 1953) is a distinguished contemporary Greek lyrics author, a poet and a writer of novels.
 In the last thirty years he has written various poems, three novels and also lyrics for 525 songs (registered with AEPI) in the contemporary Greek "rebetika", "laïka" (pop music) and "elafra" (light music) genres.
 He has collaborated with various music composers, and has occasionally worked as a record producer.
 Among those, he has often worked with Christos Nikolopoulos with whom he has had a number of popular records (including Μία είναι η ουσία - "One matter counts", and Κάποια, κάπου, κάποτε - "Some woman, somewhere, sometime").
 Together they also created and produced a CD with 12 songs (December 1986), for which they were able to assemble together 11 popular Greek performers, including Giorgos Dalaras, Haris Alexiou, Stratos Dionysiou, Giannis Parios, and Manolis Mitsias.
 Nikolopoulos performed one of the songs in the CD as well, his first public singing performance ever.
 The CD was launched as "Τραγούδια για τους φίλους μου" - "Songs for my friends".
 Other quite well known performers of Hapsiadis pop songs were Stelios Kazantzidis, Glykeria and Manolis Aggelopoulos.
Hanus G. Johansen (born 18 June 1950 in Klaksvík) also known as Hanus G., is a Faroese singer and composer.
 He is well known in his country and performs at concerts and festivals from time to time.
 Many of his songs have become evergreens and are popular even among the young people.
 He has composed melodies for some of Poul F. Joensen's poems, first time was in 1988, when he released his album "Gaman og álvara"; Poul F. (1898-1970) wrote poems about the Faroese society, about love and other themes as well.
 In November 2012, he released a new album with poems by Poul F. Joensen, Á fold eru 1000 gudar (which means On earth are only 1000 Gods), he composed all the melodies.
 In 2006, Hanus G. released an album with poems by the Norwegian poet Jakob Sande (1906-1967), who is a well known poet in Norway.
 Hanus G. has performed together with the Faroese ensemble Aldubáran and with the Faroese band Frændur, but often he performs by himself with his guitar or with various musicians.
 Hanus G.'s music is mostly folk music, but because of its popularity it can also be defined as a kind of pop music.
Bobby Bear was a British comics character in the "Daily Herald" newspaper starting in 1919.
 He was a young male bear character based on the Steiff teddy bear that was popular at the time.
 His friends were Ruby Rabbit and Maisie Mouse.
 Later Percy Porker the pig became a regular character as well as Freddy Fox on occasion.
 He was the first bear to appear as a cartoon character, pre dating Rupert Bear by a year.
Paul Francis Bright (born 19 March 1949) is an English writer, mainly of picture books and poetry for children.
 His stories have featured on BBC CBeebies and CITV’s Bookaboo programmes.
 Bright has also written stories for CBeebies radio, and for the BBC Jam and BBC RaW web sites, as well as poems for school reading schemes.
 His picture book "Quiet!"
, illustrated by Guy Parker-Rees, was shortlisted for the Blue Peter Book Award (2004) and "I’m Not Going Out There!"
, illustrated by Ben Cort won the Stockport Schools’ Book Award (2007).
 "Crunch Munch Dinosaur Lunch", illustrated by Michael Terry, was shortlisted for the Red House Book Award (2010).
 His most recent picture book, "The Hole Story", with illustrations by Bruce Ingman, was shortlisted for the 2017 English 4-11 Picture Book Award, given by the English Association .
 Bright is one of four authors selected to write new Winnie-the-Pooh stories for ‘The Best Bear in all the World’, an official sequel to the classic stories by A. A. Milne, published in October 2016 to celebrate 90 years since the publication of "Winnie-the-Pooh".
 Bright has appeared at the Edinburgh International Book Festival and the Wigtown Book Festival.
 His name consistently features in the lists of the top 500 most borrowed authors from UK public libraries
Margot Bennett (born Muriel Eisenberg, February 19, 1935) is an American publicist and former actress who appeared in various stage, television and film roles between the years 1957 and 1973.
 She is best known for her appearances in the films "O Lucky Man!
" and "Who Killed Teddy Bear", and for being the first wife of both actor Keir Dullea and, later, actor Malcolm McDowell.
Winnie-the-Pooh, also called Pooh Bear, is a fictional anthropomorphic teddy bear created by English author A. A. Milne.
Robin Jarvis (born 8 May 1963) is a British Young-Adult fiction (YA) and children's novelist, who writes dark fantasy, suspense and supernatural thrillers.
 His books for Young Adults have featured the inhabitants of a coastal town battling a monumental malevolence with the help of its last supernatural guardian (The Witching Legacy), a diminutive race of Werglers (shape shifters) pitched against the evil might of the faerie hordes (The Hagwood Trilogy), a sinister "world-switching" dystopian future, triggered by a sinister and hypnotic book (Dancing Jax), Norse Fates, Glastonbury crow-demons and a time travelling, wise-cracking teddy bear.
 (The Wyrd Museum series), dark powers, a forgotten race and ancient evils on the North Yorkshire coast (The Whitby Witches trilogy), epic medieval adventure (The Oaken Throne) and science-fiction dramatising the "nefarious intrigue" within an alternate Tudor realm, peopled by personalities of the time, automata servants and animals known as Mechanicals and ruled by Queen Elizabeth I.
 (Deathscent).