What pick number was the Boston Bruins selection for defence?
CREATE TABLE table_2897457_8 (
    pick__number VARCHAR,
    position VARCHAR,
    nhl_team VARCHAR
)
SELECT pick__number FROM table_2897457_8 WHERE position = "Defence" AND nhl_team = "Boston Bruins"
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 pick number was the Boston Bruins selection for defence? ### Input: CREATE TABLE table_2897457_8 (
    pick__number VARCHAR,
    position VARCHAR,
    nhl_team VARCHAR
) ### Response: SELECT pick__number FROM table_2897457_8 WHERE position = "Defence" AND nhl_team = "Boston Bruins"