members property in hierarchy

dear all,
i have a question about writing qury for object properties. How can i 
call specific property like is_decomposed_in which i have defined for my 
ontology which is SNIK.
I have class like patient_admission and it has property is_decomposed_in 
3 other classes.
Patient_admission is_decomposed_in:
  Medical_admission, Nursing_admission, Administrative_admission
I want to ask in what classes is Patient_admission decomposed in? I want 
to get the 3 classes(Medical_admission, Nursing_admission, 
Administrative_admission) as answers.

regards
Iman