Helicopter is a type of Machine. Machine is related to Wash. Wash is related to Household. Household is related to Family. 
Electric is related to Engineer. Engineer is related to Man. Man is related to Flesh. Flesh is related to Body. 
Helicopter --IsA--> Machine <--RelatedTo--> Wash <--RelatedTo--> Household <--RelatedTo--> Family 
Electric <--RelatedTo--> Engineer <--RelatedTo--> Man <--RelatedTo--> Flesh <--RelatedTo--> Body 