user: Question: In what arena was the North Dakota the runner-up?
Columns: ['Year', 'Champion', 'Score', 'Runner-up', 'City', 'Arena']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1949.0, 'Boston College', '4–3', 'Dartmouth', 'Colorado Springs, CO', 'Broadmoor Arena']
SQL:

assistant: SELECT "Arena" FROM "Table" WHERE "Runner-up" = 'North Dakota';