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_15451122_2 (second_member VARCHAR, first_member VARCHAR)
### Question:
How many different second members were there when John rudhale was first member?
### Answer:
SELECT COUNT(second_member) FROM table_15451122_2 WHERE first_member = "John Rudhale"