Which Annual ridership (2008) has a Number of stations larger than 70, and an Annual ridership (1998) smaller than 451,971,849?
CREATE TABLE table_50723 (
    "Line" text,
    "Operator" text,
    "Line length (kilometres)" real,
    "Number of stations" real,
    "Annual ridership (1998)" real,
    "Annual ridership (2008)" real
)
SELECT MIN("Annual ridership (2008)") FROM table_50723 WHERE "Number of stations" > '70' AND "Annual ridership (1998)" < '451,971,849'
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 Annual ridership (2008) has a Number of stations larger than 70, and an Annual ridership (1998) smaller than 451,971,849? ### Input: CREATE TABLE table_50723 (
    "Line" text,
    "Operator" text,
    "Line length (kilometres)" real,
    "Number of stations" real,
    "Annual ridership (1998)" real,
    "Annual ridership (2008)" real
) ### Response: SELECT MIN("Annual ridership (2008)") FROM table_50723 WHERE "Number of stations" > '70' AND "Annual ridership (1998)" < '451,971,849'