Capacity is related to Amount. Amount is related to Mountain. 
Clay is a type of Soil. Pot is made of Clay. Pot is a type of Stake. Stake is related to Wooden. 
Capacity <--RelatedTo--> Amount <--RelatedTo--> Mountain 
Soil <--IsA-- Clay <--MadeOf-- Pot --IsA--> Stake <--RelatedTo--> Wooden 