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_15187735_5 (segment_a VARCHAR, segment_c VARCHAR)
### Question:
When cardboard boxes is segment c what is segment a?
### Answer:
SELECT segment_a FROM table_15187735_5 WHERE segment_c = "Cardboard Boxes"