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 review (i_id VARCHAR); CREATE TABLE item (i_id VARCHAR)
### Question:
Find the number of items that did not receive any review.
### Answer:
SELECT COUNT(*) FROM item WHERE NOT i_id IN (SELECT i_id FROM review)