Composition is a synonym of Constitution. Constitution is related to Nation. Nation is related to Place. 
Demand is a synonym of Requirement. Requirement is related to Price. Price is related to Shop. you are likely to find Pen in/at/on Shop. 
Composition <--Synonym--> Constitution <--RelatedTo--> Nation <--RelatedTo--> Place 
Demand <--Synonym--> Requirement <--RelatedTo--> Price <--RelatedTo--> Shop <--AtLocation-- Pen 