On which episode number is event 4 The Wall and event 1 the Pendulum?
CREATE TABLE table_21434 (
    "Episode Number" real,
    "Air Date" text,
    "Event 1" text,
    "Event 2" text,
    "Event 3" text,
    "Event 4" text
)
SELECT COUNT("Episode Number") FROM table_21434 WHERE "Event 4" = 'The Wall' AND "Event 1" = 'Pendulum'
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: On which episode number is event 4 The Wall and event 1 the Pendulum? ### Input: CREATE TABLE table_21434 (
    "Episode Number" real,
    "Air Date" text,
    "Event 1" text,
    "Event 2" text,
    "Event 3" text,
    "Event 4" text
) ### Response: SELECT COUNT("Episode Number") FROM table_21434 WHERE "Event 4" = 'The Wall' AND "Event 1" = 'Pendulum'