Guard is related to Position. Lie is a type of Position. 
you are likely to find Machine in/at/on Museum. Museum can be used for History. History is related to Event. Event is related to Concert. 
Guard <--RelatedTo--> Position <--IsA-- Lie 
Machine --AtLocation--> Museum --UsedFor--> History <--RelatedTo--> Event <--RelatedTo--> Concert 