Question: What is the seating capacity of the theatre, that along with the King's has Stephen Barry as chief executive ? 

Context articles: Al-Hamadaniah Tennis Complex
Barry Quirk
Playhouse Theatre
Egyptian Theatre (Coos Bay, Oregon)
The Colosseum at Caesars Palace
Edinburgh Festival Theatre
Clive Barry
Stephen Barry
Fischer Theatre
Rialto Theatre (Tampa, Florida)

Al-Hamadaniah Tennis Complex (Arabic: مجمع الحمدانية للتنس‎ ‎ ) is a tennis complex in Aleppo, Syria, featuring an indoor tennis court with a seating capacity of 800 spectators and an outdoor tennis court with a seating capacity of 598 spectators along with 4 other outdoor training courts.
 The complex was opened in 2008, as part of the al-Hamadaniah Sports City.
Barry Quirk {'1': ", '2': ", '3': ", '4': "} is Chief Executive of Lewisham Council and co-chaired the Design Commission's report 'Restarting Britain 2: meeting needs, saving money, humanising services, engaging citizens'.
 He has been Chief Executive at Lewisham since November 1993, and once described by Geoff Mulgan as a 'seasoned public service leader'.
 He has worked in local government for over 35 years, with experience in five London councils.
 He is a leading local government chief executive nationally, involved in the improvement of public services across London and the UK.
 From 2004 to 2009, Barry was appointed by Government to be the National Efficiency Champion for English local government.
 In 2007 he produced a landmark report for Government on the potential transfer of public assets to community groups.
The Playhouse Theatre is a West End theatre in the City of Westminster, located in Northumberland Avenue, near Trafalgar Square.
 The Theatre was built by F. H. Fowler and Hill with a seating capacity of 1,200.
 It was rebuilt in 1907 and still retains its original substage machinery.
 Its current seating capacity is 786.
The Egyptian Theatre is a historic movie theatre in Coos Bay, Oregon, United States.
 It was originally built as a garage, and was converted to a theatre in 1925.
 With a seating capacity of 770, the theatre is an example of the Egyptian Theatre style of Egyptian Revival architecture that was popular in the early 20th century in the U.S., especially following the 1922 discovery of the tomb of King Tut.
 The building was listed on the U.S. National Register of Historic Places on May 24, 2010.
 In fact it was announced as the featured listing in the National Park Service's weekly list of June 4, 2010.
The Colosseum at Caesars Palace is a theatre located on the Las Vegas Strip in Las Vegas, Nevada.
 The theatre is the main entertainment venue for Caesars Palace.
 Deemed the "Home of the Greatest Entertainers in the World", the theatre hosts numerous residency shows by Celine Dion, Elton John, Rod Stewart, Cher, Bette Midler, Shania Twain, and Mariah Carey.
 Celine Dion has had the longest residency(1,110 shows as of June 2, 2018) at the venue grossing a total of $650 million since her arrival in 2003.
 She also performed her record-breaking 1000th show at the venue on October 8, 2016.
 The venue has an estimated seating capacity of 4,296 and is inspired by the architecture of ancient Rome along with aspects of contemporary architecture.
 The cost of the theatre totaled $108 million, becoming the most expensive entertainment venue in Las Vegas, beating the "O" Theatre at the Bellagio Las Vegas.
The Edinburgh Festival Theatre (formerly Empire Palace Theatre) is a performing arts venue located on Nicolson Street in Edinburgh, Scotland used primarily for performances of opera and ballet, large-scale musical events, and touring groups.
 After its most recent renovation in 1994, it seats 1,915.
 It is one of the major venues of the annual summer Edinburgh International Festival and is the Edinburgh venue for the Scottish Opera and the Scottish Ballet.
Clive Stephen Barry (2 September 1922 – 25 August 2003) was an Australian novelist and inaugural winner of the Guardian Fiction Prize, described by the "Oxford Companion to Australian Literature" as a "vivid stylist with a capacity for dry humour".
Stephen Leon Reid Barry (4 July 1945 – 18 October 2000) was a British arts administrator, drama producer, and artistic director.
 He was chief executive of two Edinburgh theatres, the Festival and the King's, prime venues of the famed Edinburgh International Festival.
 In his short career, he also supervised artistic live-theatre rejuvenations at The Playhouse Theatre (Perth), Australia, the Lyceum Theatre (Sheffield) and the Theatre Royal, Bath.
The Fischer Theatre was built in 1884 in Danville, Illinois, and was known as the Grand Opera House at that time.
 The grand opening was held on November 5, 1884.
 The lot on which it was built cost $6000, and the building itself cost $28,000 including furnishings.
 In 1912, the theatre was remodeled and upon its reopening on March 13, 1913, it was known as the Fischer Theater, after a member of its governing board.
 In 1929, the theater added equipment to project movies, and the exterior was remodeled when apartments and commercial space were added to the front of the building.
 A large pipe organ was used to accompany silent movies.
 In 1971, the theater was sold to the Kerasotes Theatres chain.
 The original seating capacity was about 900, which included the main floor, mezzanine, balcony and boxes.
 New seating was installed in 1971 when it became a Kerasotes theatre, giving the main floor a capacity of 600.
The Rialto Theatre opened in 1926 and closed sometime in the '40s or '50s although the St. Pete Times lists it as closing sometime in the '70s.
 It was listed in the 1941 & 1943 editions of the Film Daily Yearbook as the Rialto Theatre with a seating capacity of 375, and in the 1950 edition of the same yearbook as “The Cinema” with a seating capacity of 530.