What is the number of points for the Entrant of wolfgang seidel and a Cooper t45 chassis later than 1960?
CREATE TABLE table_15423 (
    "Year" real,
    "Entrant" text,
    "Chassis" text,
    "Engine" text,
    "Points" real
)
SELECT COUNT("Points") FROM table_15423 WHERE "Entrant" = 'wolfgang seidel' AND "Chassis" = 'cooper t45' AND "Year" > '1960'
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 number of points for the Entrant of wolfgang seidel and a Cooper t45 chassis later than 1960? ### Input: CREATE TABLE table_15423 (
    "Year" real,
    "Entrant" text,
    "Chassis" text,
    "Engine" text,
    "Points" real
) ### Response: SELECT COUNT("Points") FROM table_15423 WHERE "Entrant" = 'wolfgang seidel' AND "Chassis" = 'cooper t45' AND "Year" > '1960'