What is the nssdc id for Echo 1?
CREATE TABLE table_2150068_1 (
    nssdc_id VARCHAR,
    satellite VARCHAR
)
SELECT nssdc_id FROM table_2150068_1 WHERE satellite = "Echo 1"
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 nssdc id for Echo 1? ### Input: CREATE TABLE table_2150068_1 (
    nssdc_id VARCHAR,
    satellite VARCHAR
) ### Response: SELECT nssdc_id FROM table_2150068_1 WHERE satellite = "Echo 1"