Utility is a type of Facility. Facility is related to Factory. Factory is related to Assembly. Court is a type of Assembly. 
Limb is related to Eye. Eye is related to Come. 
Utility --IsA--> Facility <--RelatedTo--> Factory <--RelatedTo--> Assembly <--IsA-- Court 
Limb <--RelatedTo--> Eye <--RelatedTo--> Come 