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"
### Context: 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? ### Answer: SELECT class FROM table_19398910_4 WHERE bout_6 = "Sanchez ( ESP ) W 5-0"