user: Question: What is the home city for the team whose home ground is DnB Nor Arena? 
Columns: ['Team', 'Home city', 'Home ground', 'In Toppserien since', 'First appearance', 'Seasons']
Types: ['text', 'text', 'text', 'real', 'real', 'real']
Sample row: ['Amazon Grimstad', 'Grimstad', 'JJ Ugland Stadion', 2006.0, 2006.0, 8.0]
SQL:

assistant: SELECT "Home city" FROM "Table" WHERE "Home ground" = 'DnB Nor Arena';