for how many federal states is the city of lahnstein listed in the ranking?
CREATE TABLE table_26427332_17 (federal_state VARCHAR, city VARCHAR)
SELECT COUNT(federal_state) FROM table_26427332_17 WHERE city = "Lahnstein"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: 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? [/INST] SELECT COUNT(federal_state) FROM table_26427332_17 WHERE city = "Lahnstein" </s>