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 concert (stadium_id VARCHAR, capacity VARCHAR); CREATE TABLE stadium (stadium_id VARCHAR, capacity VARCHAR)
### Question:
Find the number of concerts happened in the stadium with the highest capacity .
### Answer:
SELECT COUNT(*) FROM concert WHERE stadium_id = (SELECT stadium_id FROM stadium ORDER BY capacity DESC LIMIT 1)