What is the Last 10 Meetings when Norman is ou, 18-6?
CREATE TABLE table_50604 (
    "Oklahoma vs." text,
    "Overall Record" text,
    "at Norman" text,
    "at Opponent's Venue" text,
    "at Neutral Site" text,
    "Last 5 Meetings" text,
    "Last 10 Meetings" text,
    "Current Streak" text,
    "Since Beginning of Big 12" text
)
SELECT "Last 10 Meetings" FROM table_50604 WHERE "at Norman" = 'ou, 18-6'
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 is the Last 10 Meetings when Norman is ou, 18-6? ### Input: CREATE TABLE table_50604 (
    "Oklahoma vs." text,
    "Overall Record" text,
    "at Norman" text,
    "at Opponent's Venue" text,
    "at Neutral Site" text,
    "Last 5 Meetings" text,
    "Last 10 Meetings" text,
    "Current Streak" text,
    "Since Beginning of Big 12" text
) ### Response: SELECT "Last 10 Meetings" FROM table_50604 WHERE "at Norman" = 'ou, 18-6'