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_18 (group VARCHAR, weight__kg_ INTEGER)
### Question:
Which group has a weight (kg) less than 55?
### Answer:
SELECT group FROM table_name_18 WHERE weight__kg_ < 55