Component is related to Bar. Bar is related to College. College is related to Secondary. 
Used is related to Oil. you are likely to find Oil in/at/on Engine. Engine is related to Power. Power is related to Mad. 
Component <--RelatedTo--> Bar <--RelatedTo--> College <--RelatedTo--> Secondary 
Used <--RelatedTo--> Oil --AtLocation--> Engine <--RelatedTo--> Power <--RelatedTo--> Mad 