The ship SSBergensfjord built before 1973 has what tonnage?
CREATE TABLE table_name_90 (tonnage VARCHAR, built VARCHAR, ship VARCHAR)
SELECT tonnage FROM table_name_90 WHERE built < 1973 AND ship = "ssbergensfjord"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_90 (tonnage VARCHAR, built VARCHAR, ship VARCHAR) Question: The ship SSBergensfjord built before 1973 has what tonnage? [/INST] SELECT tonnage FROM table_name_90 WHERE built < 1973 AND ship = "ssbergensfjord" </s>