Operator is related to Add. Add is related to Calculation. Calculation is a type of Planning. Planning is a type of Design. 
Body is related to Lip. Lip is related to Stiff. 
Operator <--RelatedTo--> Add <--RelatedTo--> Calculation --IsA--> Planning --IsA--> Design 
Body <--RelatedTo--> Lip <--RelatedTo--> Stiff 