Chocolate is related to Quality. Quality is related to Fresh. Fresh is related to Water. 
Purse is related to Female. Grandmother is a type of Female. Grandmother is a type of Grandparent. 
Chocolate <--RelatedTo--> Quality <--RelatedTo--> Fresh <--RelatedTo--> Water 
Purse <--RelatedTo--> Female <--IsA-- Grandmother --IsA--> Grandparent 