user: Question: Which is the charity that the background of the celebrity is Heavyweight Champion?
Columns: ['Celebrity', 'Background', 'Original Team', 'Age', 'Hometown', 'Charity', 'Result', 'Raised']
Types: ['text', 'text', 'text', 'real', 'text', 'text', 'text', 'text']
Sample row: ['Piers Morgan Category:Articles with hCards', 'TV Judge / Tabloid Editor', 'Hydra', 42.0, 'Guildford , Surrey', 'Intrepid Fallen Heroes Fund', '13 The Celebrity Apprentice (2008-03-27)', '13 $754,300']
SQL:

assistant: SELECT "Charity" FROM "Table" WHERE "Background" = 'Heavyweight Champion';