Charter is a synonym of Rent. Rent is related to Musical. Musical is related to Piano. Piano can be used for Music. 
Extreme is a synonym of Final. Final is a type of Match. Match is a synonym of Couple. 
Charter <--Synonym--> Rent <--RelatedTo--> Musical <--RelatedTo--> Piano --UsedFor--> Music 
Extreme <--Synonym--> Final --IsA--> Match <--Synonym--> Couple 