Officer is related to President. President is related to American. American is related to Revolution. Revolutionary is derived from Revolution. 
Beam is related to Metal. Metal is related to Electrical. Electrical is related to Circuit. 
Officer <--RelatedTo--> President <--RelatedTo--> American <--RelatedTo--> Revolution <--DerivedFrom-- Revolutionary 
Beam <--RelatedTo--> Metal <--RelatedTo--> Electrical <--RelatedTo--> Circuit 