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_name_51 (events INTEGER, top_5 VARCHAR)
### Question:
What is the mean number of events when top-5 is 1?
### Answer:
SELECT AVG(events) FROM table_name_51 WHERE top_5 = 1