Wing is a type of Position. Position is a synonym of Post. Post is related to Staff. Staff is related to Employee. 
Treatment is related to Clinic. Clinic is a type of Session. Session is a type of Conference. 
Wing --IsA--> Position <--Synonym--> Post <--RelatedTo--> Staff <--RelatedTo--> Employee 
Treatment <--RelatedTo--> Clinic --IsA--> Session --IsA--> Conference 