Which Week has Attendance of 51,558?
CREATE TABLE table_61726 (
    "Week" real,
    "Date" text,
    "Opponent" text,
    "Result" text,
    "Attendance" real
)
SELECT MIN("Week") FROM table_61726 WHERE "Attendance" = '51,558'
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: Which Week has Attendance of 51,558? ### Input: CREATE TABLE table_61726 (
    "Week" real,
    "Date" text,
    "Opponent" text,
    "Result" text,
    "Attendance" real
) ### Response: SELECT MIN("Week") FROM table_61726 WHERE "Attendance" = '51,558'