user: Question: What are the number of runners up for Royal School Dungannon?
Columns: ['School', 'Titles', 'Shared Titles', 'Runners-Up', 'Total Finals', 'Last Title', 'Last Final']
Types: ['text', 'real', 'real', 'real', 'real', 'text', 'real']
Sample row: ['Methodist College Belfast', 35.0, 3.0, 19.0, 57.0, '2012', 2012.0]
SQL:

assistant: SELECT "Runners-Up" FROM "Table" WHERE "School" = 'Royal School Dungannon';