Steal is the opposite of Pay. Pay is related to Boss. 
Decrease is related to Iron. Iron is related to Tough. Tough is related to Person. Visitor is a type of Person. 
Steal <--Antonym--> Pay <--RelatedTo--> Boss 
Decrease <--RelatedTo--> Iron <--RelatedTo--> Tough <--RelatedTo--> Person <--IsA-- Visitor 