Area is related to Board. Board is related to Airplane. you are likely to find Cargo in/at/on Airplane. Cargo is related to Aircraft. 
Stimulus is a synonym of Impulse. Impulse is a synonym of Spring. 
Area <--RelatedTo--> Board <--RelatedTo--> Airplane <--AtLocation-- Cargo <--RelatedTo--> Aircraft 
Stimulus <--Synonym--> Impulse <--Synonym--> Spring 