Pin is related to Press. Press is related to Machine. Machine is related to Factory. 
Chief is related to Man. Bull is a type of Man. Bull is a synonym of Cat. Cat is related to Lion. 
Pin <--RelatedTo--> Press <--RelatedTo--> Machine <--RelatedTo--> Factory 
Chief <--RelatedTo--> Man <--IsA-- Bull <--Synonym--> Cat <--RelatedTo--> Lion 