Question: The BBC Sessions include a recording from a concert in this city that had a population on what in 2015

Context paragraphs:
BBC Sessions (Led Zeppelin album): BBC Sessions is a compilation album featuring studio sessions and a live concert recorded by English rock group Led Zeppelin for the BBC.  It was released on 11 November 1997, by Atlantic Records.  This was the first release of new Led Zeppelin material in seven years.  Disc one consists of material from four different 1969 BBC sessions.  Disc two contains most of the 1 April 1971 concert from the Paris Theatre in London.  Disc three was only included in a limited run of album releases and features rare interviews from 1969, 1976/1977, and 1990.

Heaven (Rebecca Ferguson album): Heaven is the debut studio album by English singer-songwriter Rebecca Ferguson.  The album was released on December 5, 2011 under the recordings of Syco Music and RCA Records.  Recording sessions include: London, Los Angeles and Sweden.  Eg White, who has worked with Adele and Duffy, serves as a major collaborator.  Additional producers and songwriters include Steve Booker, Fraser T Smith, Xenomania, Paul Barry and Mark Taylor.

On Air (Queen album): On Air is a live album by the British rock band Queen.  It was released in November 2016 in a two disc format, a six disc deluxe format and a 3LP vinyl release.  The two disc format features the complete BBC Sessions, the six disc format features the complete BBC Sessions, as well as a disc featuring several songs from three concerts spanning between 1973 and 1986 and three discs featuring various interviews broadcast on Capital Radio, BBC Radio 1 and Radio 2.

McKay Avenue School: McKay Avenue School is a historic site in Edmonton, Alberta.  Designed by architect Henry Denny Johnson, the school was completed in 1905, the year that Alberta became a province.  The Alberta Legislature had not been built, so the provincial assembly had to find other quarters for its proceedings.  In 1906 and 1907, the third floor of the building was used for the first two working sessions of the Alberta Legislative Assembly.  Important bills passed in those sessions include confirming Edmonton as the provincial capital, the founding of the University of Alberta, establishment of provincial courts, and the provision of charters for several railway companies.

Live at the BBC (Electric Light Orchestra album): Live at the BBC is a Live two disc compilation album featuring various line ups of the rock group Electric Light Orchestra (ELO).  Released in 1999 and featuring various live BBC sessions as well as Live concert segments recorded by the BBC.

Belfast: Belfast ( or ; from Irish: "Béal Feirste" , meaning "rivermouth of the sandbanks" ) is the capital and largest city of Northern Ireland, and the second largest on the island of Ireland.  On the River Lagan, it had a population of 333,871 in 2015.  Belfast was granted city status in 1888.

BBC Sessions 1968–1970: BBC Sessions 1968–1970 is a 2011 studio compilation album featuring performances by the British hard rock band Deep Purple that were recorded at the BBC's Maida Vale Studios, London, and originally broadcast on various BBC Radio shows from 1968 through 1970.  "BBC Sessions 1968–1970" is a two-disc set collecting all the surviving sessions in the BBC archives.

The BBC Sessions (Belle and Sebastian album): The BBC Sessions is an album by Belle and Sebastian.  It is a double album.  The first disc ("Radio Sessions") is a compilation of unreleased recordings recorded between 1996 and 2001, while the second ("Live in Belfast") is a live recording from a concert in Belfast on 21 December 2001.  The live album contains covers of "Here Comes the Sun", "I'm Waiting for the Man" and "The Boys are Back in Town".

Government Commissions: BBC Sessions 1996–2003: Government Commissions: BBC Sessions 1996–2003 is a compilation album by the post-rock group Mogwai released in 2005, consisting of sessions recorded between 1996 and 2003 for BBC Radio.  Some of the tracks are different from previously released versions – for example, the recording of "R U Still in 2 It? " is entirely instrumental, whereas the studio version on "Mogwai Young Team" features a lead vocal from Arab Strap member Aidan Moffat.  Following the death of BBC Radio 1 DJ John Peel in 2004, for whose show many of the tracks were recorded, Mogwai decided to dedicate the album to him.  Peel's voice announces "Ladies and Gentlemen, Mogwai!"  at the beginning of "Hunted by a Freak", the album's opener.

Buzz Buzz Buzz: Buzz Buzz Buzz is a 2001 compilation album of BBC Sessions, by The Primitives.  The track listing is identical to the BBC Sessions album, "Bubbling Up", with different album art and liner notes.  It features the songs recorded during four BBC radio sessions: for Andy Kershaw, recorded June 18, 1986; for John Peel, recorded September 30, 1986; Peel again, recorded March 31, 1987; and one more time for Peel, recorded April 17, 1988.  It features a faster, less refined version of their highest-charting single "Crash", as well as a version of UK Top 100 hit "Stop Killing Me."  Note that this album does not include all of the Primitives' radio sessions.

Supporting paragraphs: The BBC Sessions (Belle and Sebastian album) Belfast
Answer: 333,871