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_77 (competition VARCHAR, event VARCHAR, time VARCHAR)
### Question:
What Competition has an Event of 4x100 m relay and has the Time of 38.89?
### Answer:
SELECT competition FROM table_name_77 WHERE event = "4x100 m relay" AND time = "38.89"