Question: The One and Only... is a British entertainment show was presented by a man who claims to be the only O'Connor who ever had a what?

Context paragraphs:
The One and Only (TV programme): The One and Only... is a British entertainment show, celebrating some of Britain's best loved stars from the world of entertainment.  The first show aired on 8 April 2012 and was presented by Des O'Connor.  The second aired on 16 October 2013, which was presented by Paul O'Grady, starred the comedian's good friend, Cilla Black.

The Heavy Entertainment Show Tour: The Heavy Entertainment Show Tour is the twelfth concert tour by British recording artist Robbie Williams, to support his album "The Heavy Entertainment Show".  The tour begins in England and will travel throughout Europe in Summer 2017.

Hit Me, Baby, One More Time (TV series): Hit Me, Baby, One More Time is a television entertainment show first broadcast on the British television network ITV and later, as a new version, by NBC in the United States; both were presented by Vernon Kay.  During each programme, five former pop stars sing their biggest hit along with a cover version of a contemporary hit.  Each week one winner is picked from each show by a phone vote (in the British version) or a studio-audience vote (in the American version), leading to the grand final when the overall winner can release a single featuring both songs (in the British version) or have $20,000 donated to a charity of their choice (in the American version).  The show's title comes from a line in the Britney Spears song "...Baby One More Time".

OFI Sunday: OFI Sunday was a British entertainment show hosted by Chris Evans.  It aired on Sundays on ITV at 10:30 pm.  The title stood for "Oh Flip It's Sunday", similar to the previous show "TFI Friday".

A Night with...: A Night with is a British entertainment show on ITV featuring well-known musicians.  The first episode featured Will Young and was presented by Kate Thornton, the show aired on 27 August at 9pm.  The second episode starred Beyoncé and was presented by Steve Jones, airing on 4 December at 9pm.

One Night Only (TV series): One Night Only is a British entertainment show, celebrating the best of British Music.  Myleene Klass hosted the first episode in December 2008 with the singer Tom Jones.  Ben Shephard hosted in 2009 and 2010, which saw Rod Stewart and Phil Collins take to the stage.  In November 2010, Fearne Cotton hosted a one-off special with Bon Jovi and in 2011 presented by Christine Bleakley featuring music from Duran Duran.  Another episode aired in November 2014, with Rob Brydon hosting "Neil Diamond: One Night Only".  Joanna Lumley presented the seventh episode with Bette Midler in December 2014.

Brainiac: History Abuse: Brainiac: History Abuse was a British entertainment documentary show that aired on Sky1 from 1 June to 20 July 2005.  It was a spin-off of the show "" concentrating on historical subjects.  The show is presented by Charlotte Hudson with additional input from Stephen Wisdom as "Ernest Clough, History Buff", and Regina Cotter as Shell in the Kitchen cooking traditional medieval delicacies.

This Is... (TV series): This Is... is a British entertainment show, celebrating the best of British Music.  Starring Michael Bublé, JLS, Justin Bieber and Lionel Richie.  Presented by various celebrity hosts including Christine Bleakley and Reggie Yates

Des O'Connor: O'Connor was born in Stepney, East London to Maude ("née" Bassett) and Harry O'Connor.  His mother was Jewish and his father was from Ireland.  Des claims to be the only O'Connor who ever had a Bar Mitzvah.  He had a brother, William O'Connor, and has a sister, Patricia, who is one year his junior.  He was evacuated to Northampton during the Second World War and was briefly a professional footballer with Northampton Town.

Syco: Syco Entertainment, often known simply as Syco, is a British entertainment company established by British entertainment mogul Simon Cowell.  The company operates a record label, talent agency, film, music, and television production company, as well as a music publishing house.  It operates a global joint venture between Cowell and Sony Music Entertainment focused on the production and marketing of music, television, film and digital content.  It employs a staff of more than 50 in offices in London and Los Angeles, and manages a string of high-profile television and music brands through partnerships with the label Sony Music and the television production company, FremantleMedia.

Supporting paragraphs: The One and Only (TV programme) Des O'Connor
Answer: Bar Mitzvah