What is the name of the tournament played on Sep 20, 1981, ending with a margin of vicroty of 2 strokes?
CREATE TABLE table_name_56 (
    tournament VARCHAR,
    margin_of_victory VARCHAR,
    date VARCHAR
)
SELECT tournament FROM table_name_56 WHERE margin_of_victory = "2 strokes" AND date = "sep 20, 1981"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the name of the tournament played on Sep 20, 1981, ending with a margin of vicroty of 2 strokes? ### Input: CREATE TABLE table_name_56 (
    tournament VARCHAR,
    margin_of_victory VARCHAR,
    date VARCHAR
) ### Response: SELECT tournament FROM table_name_56 WHERE margin_of_victory = "2 strokes" AND date = "sep 20, 1981"