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 ship (id VARCHAR, lost_in_battle VARCHAR, tonnage VARCHAR); CREATE TABLE battle (id VARCHAR, lost_in_battle VARCHAR, tonnage VARCHAR)
### Question:
How many battles did not lose any ship with tonnage '225'?
### Answer:
SELECT COUNT(*) FROM battle WHERE NOT id IN (SELECT lost_in_battle FROM ship WHERE tonnage = '225')