Fish is related to Wet. Wet is related to River. River is related to Swimming. Swimming is related to Plunge. 
Victim is related to Person. Radical is a type of Person. 
Fish <--RelatedTo--> Wet <--RelatedTo--> River <--RelatedTo--> Swimming <--RelatedTo--> Plunge 
Victim <--RelatedTo--> Person <--IsA-- Radical 