Knife is related to Cut. Cut is related to Lean. 
Spring is related to Son. Son is related to Brother. Brother is related to Member. Member is a synonym of Crew. 
Knife <--RelatedTo--> Cut <--RelatedTo--> Lean 
Spring <--RelatedTo--> Son <--RelatedTo--> Brother <--RelatedTo--> Member <--Synonym--> Crew 