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_17085981_2 (date_of_appointment VARCHAR, replaced_by VARCHAR)
### Question:
How many appointment dates were recorded when Jürgen Kohler was the replaced by?
### Answer:
SELECT COUNT(date_of_appointment) FROM table_17085981_2 WHERE replaced_by = "Jürgen Kohler"