What years did Birger Ruud win the FIS Nordic World Ski Championships?
CREATE TABLE table_174491_2 (fis_nordic_world_ski_championships VARCHAR, winner VARCHAR)
SELECT fis_nordic_world_ski_championships FROM table_174491_2 WHERE winner = "Birger Ruud"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_174491_2 (fis_nordic_world_ski_championships VARCHAR, winner VARCHAR) Question: What years did Birger Ruud win the FIS Nordic World Ski Championships? [/INST] SELECT fis_nordic_world_ski_championships FROM table_174491_2 WHERE winner = "Birger Ruud" </s>