human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: For shank type, Singer part number, Uses templates?, Description, Storage case
###Question: What's the description of the buttonholer whose singer part number is 121795 kit 121908 buttonholer?
gpt
SELECT Description FROM table WHERE Singer part number = 121795 kit 121908 buttonholer