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_12294557_3 (canadian_airdate VARCHAR, us_airdate VARCHAR)
### Question:
what are all the Canadian air dates where the u.s. air date is may 1, 2009
### Answer:
SELECT canadian_airdate FROM table_12294557_3 WHERE us_airdate = "May 1, 2009"