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_26427332_17 (federal_state VARCHAR, city VARCHAR)
### Question:
for how many federal states is the city of lahnstein listed in the ranking?
### Answer:
SELECT COUNT(federal_state) FROM table_26427332_17 WHERE city = "Lahnstein"