Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_42 (motion_picture VARCHAR, year VARCHAR, award VARCHAR, actor VARCHAR)

### Question ###
For what motion picture did Samuel L. Jackson win the best supporting actor award before 1997?

### Accurate SQL ###

SELECT motion_picture FROM table_name_42 WHERE award = "best supporting actor" AND actor = "samuel l. jackson" AND year < 1997