Skill is related to Act. Sauce is a type of Act. Sauce is a type of Substance. Agent is a type of Substance. 
Waste is related to Excessive. Excessive is a synonym of Extreme. Extreme is related to Heat. Heat is related to Stove. 
Skill <--RelatedTo--> Act <--IsA-- Sauce --IsA--> Substance <--IsA-- Agent 
Waste <--RelatedTo--> Excessive <--Synonym--> Extreme <--RelatedTo--> Heat <--RelatedTo--> Stove 