What Playoffs had an Open Cup of 3rd round?
CREATE TABLE table_35543 (
    "Year" real,
    "Division" real,
    "League" text,
    "Reg. Season" text,
    "Playoffs" text,
    "Open Cup" text,
    "Avg. Attendance" real
)
SELECT "Playoffs" FROM table_35543 WHERE "Open Cup" = '3rd round'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What Playoffs had an Open Cup of 3rd round? ### Input: CREATE TABLE table_35543 (
    "Year" real,
    "Division" real,
    "League" text,
    "Reg. Season" text,
    "Playoffs" text,
    "Open Cup" text,
    "Avg. Attendance" real
) ### Response: SELECT "Playoffs" FROM table_35543 WHERE "Open Cup" = '3rd round'