Tower is related to Control. Control is a type of See. See is related to Reading. Eye can be used for Reading. 
Unlikely is similar to Last. Last is etymologically related to Late. Late is related to Evening. Evening is the opposite of Time. 
Tower <--RelatedTo--> Control --IsA--> See <--RelatedTo--> Reading <--UsedFor-- Eye 
Unlikely <--SimilarTo--> Last --EtymologicallyRelatedTo--> Late <--RelatedTo--> Evening <--Antonym--> Time 