Flat is related to Metal. Spring is made of Metal. Spring is a type of Grow. 
Fit is a synonym of Meet. Cluster is a type of Meet. Cluster is related to Group. Group is related to Multiple. 
Flat <--RelatedTo--> Metal <--MadeOf-- Spring --IsA--> Grow 
Fit <--Synonym--> Meet <--IsA-- Cluster <--RelatedTo--> Group <--RelatedTo--> Multiple 