Pepper is a type of Vegetable. you are likely to find Pepper in/at/on Dinner. 
Lawmaker is a synonym of Legislator. Senator is a type of Legislator. Senator is a type of Person. Driver is a type of Person. 
Vegetable <--IsA-- Pepper --AtLocation--> Dinner 
Lawmaker <--Synonym--> Legislator <--IsA-- Senator --IsA--> Person <--IsA-- Driver 