Which Object type has an NGC number of 2171?
CREATE TABLE table_name_37 (object_type VARCHAR, ngc_number VARCHAR)
SELECT object_type FROM table_name_37 WHERE ngc_number = 2171
### Context: CREATE TABLE table_name_37 (object_type VARCHAR, ngc_number VARCHAR) ### Question: Which Object type has an NGC number of 2171? ### Answer: SELECT object_type FROM table_name_37 WHERE ngc_number = 2171