Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_45 (tier INTEGER, postseason VARCHAR)
### Question:
What is the total number of tiers for the postseason of semifinalist?
### Answer:
SELECT SUM(tier) FROM table_name_45 WHERE postseason = "semifinalist"