Slavery is a type of Practice. Practice is related to Faith. Faith is related to Feeling. Feeling is related to Smile. 
Atmosphere is a synonym of Feeling. Enthusiasm is a type of Feeling. Enthusiasm is related to Ambition. 
Slavery --IsA--> Practice <--RelatedTo--> Faith <--RelatedTo--> Feeling <--RelatedTo--> Smile 
Atmosphere <--Synonym--> Feeling <--IsA-- Enthusiasm <--RelatedTo--> Ambition 