Lightning is related to Electricity. Electricity is related to Cord. Thread is a type of Cord. 
Muscle is a type of Authority. Authority is a synonym of Power. Power is a type of Provide. Serve is a type of Provide. 
Lightning <--RelatedTo--> Electricity <--RelatedTo--> Cord <--IsA-- Thread 
Muscle --IsA--> Authority <--Synonym--> Power --IsA--> Provide <--IsA-- Serve 