Highway is related to Sign. Sign is related to Name. Pot is a type of Name. 
Subtle is a synonym of Nice. Nice is related to Affair. Affair is related to Person. Person is related to Fraud. 
Highway <--RelatedTo--> Sign <--RelatedTo--> Name <--IsA-- Pot 
Subtle <--Synonym--> Nice <--RelatedTo--> Affair <--RelatedTo--> Person <--RelatedTo--> Fraud 