What is the lowest listed In service for a vessel of xavery czernicki class?
CREATE TABLE table_name_71 (in_service INTEGER, vessel VARCHAR)
SELECT MIN(in_service) FROM table_name_71 WHERE vessel = "xavery czernicki class"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_71 (in_service INTEGER, vessel VARCHAR) Question: What is the lowest listed In service for a vessel of xavery czernicki class? [/INST] SELECT MIN(in_service) FROM table_name_71 WHERE vessel = "xavery czernicki class" </s>