Beam is related to Wooden. Wooden is related to Staff. Staff is related to Servant. 
Person can Fail. Double is a type of Person. Double is the opposite of One. Only is etymologically related to One. 
Beam <--RelatedTo--> Wooden <--RelatedTo--> Staff <--RelatedTo--> Servant 
Fail <--CapableOf-- Person <--IsA-- Double <--Antonym--> One <--EtymologicallyRelatedTo-- Only 