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_23 (kick_off VARCHAR, round VARCHAR)
### Question:
What was the kickoff date for the round value of R4?
### Answer:
SELECT kick_off FROM table_name_23 WHERE round = "r4"