CREATE TABLE table_4088 ("School" TEXT, "Titles" FLOAT, "Shared Titles" FLOAT, "Runners-Up" FLOAT, "Total Finals" FLOAT, "Last Title" TEXT, "Last Final" FLOAT)

What are the number of runners up for Royal School Dungannon?
SELECT "Runners-Up" FROM table_4088 WHERE "School" = 'Royal School Dungannon'
SELECT "Runners-Up" FROM "table_4088" WHERE "School" = 'Royal School Dungannon'