Head is related to Part. Part is related to Lane. you are likely to find Lane in/at/on Town. Town can be used for Convenience. 
Machine can be used for Work. you are likely to find Machine in/at/on Garage. 
Head <--RelatedTo--> Part <--RelatedTo--> Lane --AtLocation--> Town --UsedFor--> Convenience 
Work <--UsedFor-- Machine --AtLocation--> Garage 