Snake can Pet. Cow can Pet. Cow is related to Barn. 
Beam is related to Metal. Metal is related to Electrical. Electrical is related to Circuit. 
Snake --CapableOf--> Pet <--CapableOf-- Cow <--RelatedTo--> Barn 
Beam <--RelatedTo--> Metal <--RelatedTo--> Electrical <--RelatedTo--> Circuit 