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_66 (overall_ranking INTEGER, index VARCHAR)
### Question:
For all events with index f10, what is the sum of the overall rankings?
### Answer:
SELECT SUM(overall_ranking) FROM table_name_66 WHERE index = "f10"