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_1745843_2 (part_1 VARCHAR, class VARCHAR)
### Question:
What is listed under part 1 for class 3b?
### Answer:
SELECT part_1 FROM table_1745843_2 WHERE class = "3b"