Tax is related to Federal. Federal is related to Express. Stress is a type of Express. 
Dish is related to Condition. Condition is related to Rule. Rule is related to Code. Code is related to Symbolic. 
Tax <--RelatedTo--> Federal <--RelatedTo--> Express <--IsA-- Stress 
Dish <--RelatedTo--> Condition <--RelatedTo--> Rule <--RelatedTo--> Code <--RelatedTo--> Symbolic 