How many different numbers of cantons does the province with the Armenian name վասպուրական have?
create table table_23887174_1 (number_of_cantons__gavars_ varchar, armenian_name varchar, PRIMARY KEY (number_of_cantons__gavars_))
select count(number_of_cantons__gavars_) from table_23887174_1 where armenian_name = "վասպուրական"