What is the Height that has a year born before 1977
CREATE TABLE table_70911 (
    "Player" text,
    "Height" real,
    "Position" text,
    "Year born" real,
    "Current Club" text
)
SELECT COUNT("Height") FROM table_70911 WHERE "Year born" < '1977'
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 Height that has a year born before 1977 ### Input: CREATE TABLE table_70911 (
    "Player" text,
    "Height" real,
    "Position" text,
    "Year born" real,
    "Current Club" text
) ### Response: SELECT COUNT("Height") FROM table_70911 WHERE "Year born" < '1977'