Inevitable is a synonym of Certain. Certain is related to Positive. Positive is related to Optimistic. 
Hook is a synonym of Draw. Draw is related to Talent. Talent is a type of Expert. Investigator is a type of Expert. 
Inevitable <--Synonym--> Certain <--RelatedTo--> Positive <--RelatedTo--> Optimistic 
Hook <--Synonym--> Draw <--RelatedTo--> Talent --IsA--> Expert <--IsA-- Investigator 