Sum is related to Average. Average is related to Ad. 
Protect is related to Provide. Provide is related to Care. Care is a type of Repair. Repair is a type of Improvement. 
Sum <--RelatedTo--> Average <--RelatedTo--> Ad 
Protect <--RelatedTo--> Provide <--RelatedTo--> Care --IsA--> Repair --IsA--> Improvement 