What is the date that a hell ship sunk in the East China Sea?
CREATE TABLE table_name_71 (date VARCHAR, where_sunk VARCHAR, ship_type VARCHAR)
SELECT date FROM table_name_71 WHERE where_sunk = "east china sea" AND ship_type = "hell ship"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_71 (date VARCHAR, where_sunk VARCHAR, ship_type VARCHAR) Question: What is the date that a hell ship sunk in the East China Sea? [/INST] SELECT date FROM table_name_71 WHERE where_sunk = "east china sea" AND ship_type = "hell ship" </s>