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_20 (works_number VARCHAR, builder VARCHAR, number VARCHAR)
### Question:
Which Works number has a Builder of canadian engine & machinery company, and a Number smaller than 3?
### Answer:
SELECT works_number FROM table_name_20 WHERE builder = "canadian engine & machinery company" AND number < 3