Ad is derived from Disease. Disease is related to Infection. 
Persist is a synonym of Prevail. Prevail is a synonym of Hold. Hold is a type of Be. Contain is a type of Be. 
Ad --DerivedFrom--> Disease <--RelatedTo--> Infection 
Persist <--Synonym--> Prevail <--Synonym--> Hold --IsA--> Be <--IsA-- Contain 