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_19716903_1 (isolation VARCHAR, mountain_peak VARCHAR)
### Question:
How many different isolation numbers does the Jack Mountain peak have?
### Answer:
SELECT COUNT(isolation) FROM table_19716903_1 WHERE mountain_peak = "Jack Mountain"