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_42952 ( "Year" real, "Actor" text, "Award" text, "Motion Picture" text, "Result" text )

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

### Accurate SQL ###

SELECT "Motion Picture" FROM table_42952 WHERE "Award" = 'best supporting actor' AND "Actor" = 'samuel l. jackson' AND "Year" < '1997'