Question: Who was the winner of the fifth season of the tv baking competition, produced by Love Productions, The Great British Bake off?

Context paragraphs:
Bake Off Brasil: Bake Off Brasil – Mão na Massa (English: "Bake Off Brasil – Hands On"), often referred to as simply Bake Off Brasil or BOB is a Brazilian reality television series based on the BBC baking competition "The Great British Bake Off".

The Great British Bake Off (series 8): The eighth series of "The Great British Bake Off" began on 29 August 2017, with this being the first of "The Great British Bake Off" to be broadcast on Channel 4, after the production company Love Productions moved the show.  It is the first series for new hosts Noel Fielding and Sandi Toksvig, and new judge Prue Leith.

Junior Bake Off: Junior Bake Off is a British TV baking competition series where forty young bakers tackle a series of baking challenges including the art of baking cakes, biscuits, bread and pastries all competing to be crowned ""Junior Bake Off" Champion", with all their bakes being judged by two leading chefs.

Nancy Birtwhistle: Nancy Birtwhistle is best known as the winner of the fifth series of "The Great British Bake Off".  Birtwhistle (born circa 1954 in Hull), a grandmother of eight, had applied in 2013 as well but was unsuccessful.  She now contributes to national papers such as The Daily Telegraph, has her own website, and gives baking demonstrations across the UK.

The American Baking Competition: The American Baking Competition is a reality competition television series that aired on CBS from May 29 to July 10, 2013.  It was based on the BBC baking competition "The Great British Bake Off".  The series aimed to find the best amateur baker in the United States.  The series was hosted by Jeff Foxworthy and judged by Marcela Valladolid and Paul Hollywood.  The competition was won by Brian Emmett.

The Great British Bake Off: An Extra Slice: The Great British Bake Off: An Extra Slice, sometimes shortened to An Extra Slice, is a British television show after-show to follow the series "The Great British Bake Off".  Hosted by Jo Brand, the show began airing on BBC Two on 8 August 2014 two days after the premiere episode of the fifth series of GBBO, and is filmed at The London Studios.  In April 2017, it was announced that the series and Brand would follow "The Great British Bake Off" to Channel 4 in 2017.

The Great British Bake Off: The Great British Bake Off, often referred to as Bake Off or GBBO, is a British television baking competition produced by Love Productions, in which a group of amateur bakers compete against each other in a series of rounds, attempting to impress a group of judges with their baking skills, with a contestant being eliminated in each round, with the winner being selected from the remaining contestants that make it to the finals.  The show's first episode was aired on 17 August 2010, with its first four series broadcast on BBC Two, until its growing popularity led the BBC to move it to BBC One for the next three series.  After its seventh series, Love Productions signed a three-year deal with Channel 4 to produce the show for the broadcaster.  The programme is currently presented by Noel Fielding and Sandi Toksvig, with Paul Hollywood and Prue Leith on the judging panel.

The Great American Baking Show: The Great American Baking Show is an American adaptation of "The Great British Bake Off", a television baking competition.  Its first season aired under the title "The Great Holiday Baking Show".

The Great British Bake Off (series 1): Series 1 of "The Great British Bake Off", aired on BBC 2 saw ten home bakers take part in a bake-off to test every aspect of their baking skills as they battled to be crowned the Great British Bake Off's best amateur baker.  Each week the nationwide tour saw keen bakers put through three challenges in a particular discipline.  The rounds took place in various locations across the UK following a theme, for example, the episode on puddings would take place in Bakewell, bread baking would take place near Sandwich.  This first series had a voiceover by Stephen Noonan; for the subsequent series this role was taken by the on-screen presenters Mel Giedroyc and Sue Perkins.  The competition was won by Edd Kimber.

The Great Australian Bake Off: The Great Australian Bake Off is an Australian television baking series based on the BBC baking competition "The Great British Bake Off."  The series first premiered on 9 July 2013 on the Nine Network and ran for one season with presenters Shane Jacobson and Anna Gare and judges Dan Lepard and Kerry Vincent.  On 1 April 2015 it was announced that the series had been picked up by pay television channel LifeStyle Food and production company FremantleMedia Australia for a second season which premiered on 13 October 2015 with presenters Claire Hooper and Mel Buttle and judges Maggie Beer and Matt Moran.

Supporting paragraphs: Nancy Birtwhistle The Great British Bake Off
Answer: Nancy Birtwhistle