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_40 (sack INTEGER, player VARCHAR, fumr VARCHAR)
### Question:
what is the total sack for mike green when fumr is less than 0?
### Answer:
SELECT SUM(sack) FROM table_name_40 WHERE player = "mike green" AND fumr < 0