How many categories are there when the attribute is "onreset"?
CREATE TABLE table_1507852_1 (category VARCHAR, attribute VARCHAR)
SELECT COUNT(category) FROM table_1507852_1 WHERE attribute = "onreset"
### Context: CREATE TABLE table_1507852_1 (category VARCHAR, attribute VARCHAR) ### Question: How many categories are there when the attribute is "onreset"? ### Answer: SELECT COUNT(category) FROM table_1507852_1 WHERE attribute = "onreset"