Sauce is related to Wing. Wing is the opposite of Breast. Breast is a synonym of Summit. 
Cast is a type of Solid. Piano can be Solid. Piano is similar to Organ. Organ is related to Ear. 
Sauce <--RelatedTo--> Wing <--Antonym--> Breast <--Synonym--> Summit 
Cast --IsA--> Solid <--HasProperty-- Piano <--SimilarTo--> Organ <--RelatedTo--> Ear 