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_68 (year INTEGER, sport VARCHAR, first VARCHAR)
### Question:
Name the sum of year for swimming and first of mike
### Answer:
SELECT SUM(year) FROM table_name_68 WHERE sport = "swimming" AND first = "mike"