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_91 (date VARCHAR, tournament VARCHAR, score VARCHAR)
### Question:
Tournament of tokyo, japan, and a Score of 4–6, 6–4, 6–4 had which date attached?
### Answer:
SELECT date FROM table_name_91 WHERE tournament = "tokyo, japan" AND score = "4–6, 6–4, 6–4"