Chemistry is a type of Science. Science can be used for Discovery. 
Market is related to Sell. House can be used for Sell. House is related to Mansion. you are likely to find Study in/at/on Mansion. 
Chemistry --IsA--> Science --UsedFor--> Discovery 
Market <--RelatedTo--> Sell <--UsedFor-- House <--RelatedTo--> Mansion <--AtLocation-- Study 