Which is the category of the group was establishe in 1990?
CREATE TABLE table_name_8 (category VARCHAR, established VARCHAR)
SELECT category FROM table_name_8 WHERE established = 1990
### Context: CREATE TABLE table_name_8 (category VARCHAR, established VARCHAR) ### Question: Which is the category of the group was establishe in 1990? ### Answer: SELECT category FROM table_name_8 WHERE established = 1990