when Sanchez ( esp ) w 5-0 were the bout 6, which were the class?
CREATE TABLE table_19398910_4 (class VARCHAR, bout_6 VARCHAR)
SELECT class FROM table_19398910_4 WHERE bout_6 = "Sanchez ( ESP ) W 5-0"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_19398910_4 (class VARCHAR, bout_6 VARCHAR) Question: when Sanchez ( esp ) w 5-0 were the bout 6, which were the class? [/INST] SELECT class FROM table_19398910_4 WHERE bout_6 = "Sanchez ( ESP ) W 5-0" </s>