CLASSIFICATION

e	Class
e	Class_by_extension
e	Class_by_intension
e	Classification
er	Classification_assignment
s	Classification_or_complete_membership
e	Classification_role
d	Classification_select
e	Complete_membership
e	Complete_membership_of_empty_set
e	Complete_membership_of_non_empty_set
d	Complete_membership_select
er	Group
d	Identifier
d	Label
d	Text