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_87 (year VARCHAR, weight_class VARCHAR, date VARCHAR)
### Question:
How many years were lightweight class on february 28, 2009?
### Answer:
SELECT COUNT(year) FROM table_name_87 WHERE weight_class = "lightweight" AND date = "february 28, 2009"