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_2538117_7 (founding_date VARCHAR, letters VARCHAR)
### Question:
What is the founding date if the letters are κψκ?
### Answer:
SELECT founding_date FROM table_2538117_7 WHERE letters = "ΚΨΚ"