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_256286_5 (type VARCHAR, description VARCHAR)
### Question:
How many type classifications are given to the measure with the description, calling convention to revise state constitution? 
### Answer:
SELECT COUNT(type) FROM table_256286_5 WHERE description = "Calling Convention to revise State Constitution"