Bottom is a type of Region. Bottom is related to Chin. Chin is a synonym of Mental. 
you are likely to find Satisfaction in/at/on Work. Work is related to Research. Research is related to Experiment. 
Region <--IsA-- Bottom <--RelatedTo--> Chin <--Synonym--> Mental 
Satisfaction --AtLocation--> Work <--RelatedTo--> Research <--RelatedTo--> Experiment 