Motor is related to Machine. Machine can be used for Combine. 
Master entails/necessarily involves Learn. Drill is a type of Learn. Drill is a type of Teach. Teach is a synonym of Instruct. 
Motor <--RelatedTo--> Machine --UsedFor--> Combine 
Master --Entails--> Learn <--IsA-- Drill --IsA--> Teach <--Synonym--> Instruct 