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

### Instruction:
Which long range AM station has the lowest frequency and includes a webcast of listen live, was licensed in the city of Monterrey, and uses the Callsign of xet?

### Inputs:
table_name: table, columns: ['Frequency', 'Callsign', 'Brand', 'City of License', 'Website', 'Webcast']

### Response:
SELECT MIN Frequency FROM table WHERE Webcast = listen live AND City of License = monterrey AND Callsign = xet