What is the total number of tiers for the postseason of semifinalist?
CREATE TABLE table_name_45 (
    tier INTEGER,
    postseason VARCHAR
)
SELECT SUM(tier) FROM table_name_45 WHERE postseason = "semifinalist"
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 total number of tiers for the postseason of semifinalist? ### Input: CREATE TABLE table_name_45 (
    tier INTEGER,
    postseason VARCHAR
) ### Response: SELECT SUM(tier) FROM table_name_45 WHERE postseason = "semifinalist"