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_14 (year_of_recording INTEGER, conductor VARCHAR)
### Question:
What is the year that a record was recorded with Libor Pesek as conductor?
### Answer:
SELECT SUM(year_of_recording) FROM table_name_14 WHERE conductor = "libor pesek"