Brother is a type of Sibling. Sibling is related to Father. 
Conscience is related to Internal. Internal is related to Engine. Engine can be used for Power. Power is related to Steam. 
Brother --IsA--> Sibling <--RelatedTo--> Father 
Conscience <--RelatedTo--> Internal <--RelatedTo--> Engine --UsedFor--> Power <--RelatedTo--> Steam 