Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_11390711_4 (provider_iai_ VARCHAR, foundation VARCHAR)
### Question:
How many providers were founded in 1964?
### Answer:
SELECT COUNT(provider_iai_) FROM table_11390711_4 WHERE foundation = 1964