Close is related to Near. Near is similar to Nearby. Nearby is related to Local. Local is the opposite of National. 
Candle is a type of Lamp. Lamp is a type of Light. Light is the opposite of Strong. 
Close <--RelatedTo--> Near <--SimilarTo--> Nearby <--RelatedTo--> Local <--Antonym--> National 
Candle --IsA--> Lamp --IsA--> Light <--Antonym--> Strong 