Fellow is related to Man. Man is related to Bicycle. Bicycle can be used for Rush. Rush is related to Delivery. 
Great is related to Massive. Massive is related to Weight. Weight is the opposite of Gain. Gain is etymologically related to Wide. 
Fellow <--RelatedTo--> Man <--RelatedTo--> Bicycle --UsedFor--> Rush <--RelatedTo--> Delivery 
Great <--RelatedTo--> Massive <--RelatedTo--> Weight <--Antonym--> Gain --EtymologicallyRelatedTo--> Wide 