How many type classifications are given to the measure with the description, calling convention to revise state constitution? 
CREATE TABLE table_256286_5 (type VARCHAR, description VARCHAR)
SELECT COUNT(type) FROM table_256286_5 WHERE description = "Calling Convention to revise State Constitution"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: 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?  [/INST] SELECT COUNT(type) FROM table_256286_5 WHERE description = "Calling Convention to revise State Constitution" </s>