Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the year that a record was recorded with Libor Pesek as conductor?

### Inputs:
table_name: table, columns: ['Pianist', 'Conductor', 'Record Company', 'Year of Recording', 'Format']

### Response:
SELECT SUM Year of Recording FROM table WHERE Conductor = libor pesek