Question: Bexhill-on-Sea (often simply Bexhill) is a seaside town situated in the county of East Sussex in South East England, Bexhill is home to a performance hall, where the likes of appeared which English book author, poet, playwright, and librettist who is known best for children's novels such as "War Horse" (1982)?

Context paragraphs:
Sidley, East Sussex: Sidley is a village on the outskirts of Bexhill-on-Sea in East Sussex, England.  Its governance falls within the jurisdiction of the Charter Trustees town of Bexhill.  It is also a ward of Rother district council.

Michael Morpurgo: Michael Morpurgo, OBE, FRSL, FKC, DL (born 5 October 1943) is an English book author, poet, playwright, and librettist who is known best for children's novels such as "War Horse" (1982).  His work is noted for its "magical storytelling", for recurring themes such as the triumph of an outsider or survival, for characters' relationships with nature, and for vivid settings such as the English coast or World War I.  Morpurgo became the third British Children's Laureate, from 2003 to 2005.

Bexhill High Academy: Bexhill High Academy (formerly Bexhill High School) is a coeducational secondary school with academy status, located in Bexhill-on-Sea in the English county of East Sussex.

Ninfield: Ninfield is a village and civil parish in the Wealden District of East Sussex, England.  The village is situated 4 miles (6.4 km) north of Bexhill-on-Sea, at the junction of two roads: the A269 from Bexhill to Battle and the A271 to Hailsham.  The parish covers some 2,500 acres (1,010 ha) on the Weald.

St Mary Magdalene's Church, Bexhill-on-Sea: St Mary Magdalene's Church is a Roman Catholic Parish church in Bexhill-on-Sea, East Sussex, England.  It was founded in 1893 and built in 1907 in the Gothic Revival style.  It is situated on the corner of Sea Road and Magdalen Road opposite Station Road and Bexhill railway station in the centre of the town.  It was designed by Arthur Young and is a Grade II listed building.

Bexhill United F.C.: Bexhill United Football Club is a football club based in Bexhill-on-Sea, East Sussex, England.  They are currently members of the Southern Combination Division One and play at the Polegrove.  Formed in 2002 as a merger of Bexhill AAC and Bexhill Town, the club are affiliated to the Sussex County Football Association.

Sussex: Sussex ( ), from the Old English "Sūþsēaxe" (South Saxons), is a historic county in South East England corresponding roughly in area to the ancient Kingdom of Sussex.  It is bounded to the west by Hampshire, north by Surrey, north-east by Kent, south by the English Channel, and divided for many purposes into the ceremonial counties of West Sussex and East Sussex.  Brighton and Hove, though part of East Sussex, was made a unitary authority in 1997, and as such, is administered independently of the rest of East Sussex.  Brighton and Hove was granted City status in 2000.  Until then, Chichester was Sussex's only city.

Bexhill-on-Sea: Bexhill-on-Sea (often simply Bexhill) is a seaside town situated in the county of East Sussex in South East England.  An ancient town and part of the local-government district of Rother, Bexhill is home to a number of archaeological sites, a Manor House in the Old Town, an abundance of Edwardian and Victorian architecture, and the famous De La Warr Pavilion: today a modern-art gallery – which has featured the work of Andy Warhol amongst others – and performance hall, where the likes of comedian Lee Evans and author Michael Morpurgo have appeared.

Bexhill railway station: Bexhill railway station serves Bexhill-on-Sea in East Sussex, England.  It is on the East Coastway Line, and train services are provided by Southern.

Bexhill West railway station: Bexhill West is a closed station in Bexhill-on-Sea in East Sussex.  It was the terminus of the Bexhill West branch of the Hastings Line.  It was opened by the South Eastern and Chatham Railway and was operated by the Southern Region of British Railways on closing.  The station building still survives as an auction room for a firm of auctioneers.  The trackbed and site of the now demolished platforms are now occupied by commercial industrial buildings.

Supporting paragraphs: Bexhill-on-Sea Michael Morpurgo
Answer: Michael Morpurgo