OWL 1.1... does this make sense

Hi,

I'm using an implementation of OWL 1.1 in TopBraid Composer.
Does the folowwing make sense :

I have defined the following classes :

Class A
Class B
Class C
Class D

I have defined the following roles (properties) :

role1
role2

This the following make sense :

Class is defined by

role1 exacly 1 Class B
role2 exactly 1 Class C
role2 exactly 1 Class D

Thank you,

James