Smile is related to Say. Say is the opposite of Listen. Wisdom would make you want to Listen. 
Chief is related to Job. Job is related to Mechanic. Mechanic is similar to Mechanical. 
Smile <--RelatedTo--> Say <--Antonym--> Listen <--CausesDesire-- Wisdom 
Chief <--RelatedTo--> Job <--RelatedTo--> Mechanic <--SimilarTo--> Mechanical 