what is at 8:00 when at 8:30 it is my thursday night movie?
CREATE TABLE table_78121 (
    "8:00" text,
    "8:30" text,
    "9:00" text,
    "9:30" text,
    "10:00" text
)
SELECT "8:00" FROM table_78121 WHERE "8:30" = 'my thursday night movie'
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 at 8:00 when at 8:30 it is my thursday night movie? ### Input: CREATE TABLE table_78121 (
    "8:00" text,
    "8:30" text,
    "9:00" text,
    "9:30" text,
    "10:00" text
) ### Response: SELECT "8:00" FROM table_78121 WHERE "8:30" = 'my thursday night movie'