Vegetable is related to Plant. Rose is a type of Plant. Hip is part of Rose. Hip is related to Waist. 
Invisible is related to Clear. Clear is related to Obvious. 
Vegetable <--RelatedTo--> Plant <--IsA-- Rose <--PartOf-- Hip <--RelatedTo--> Waist 
Invisible <--RelatedTo--> Clear <--RelatedTo--> Obvious 