Fur is related to Soft. Soft is related to Bed. Sheet can be used for Bed. 
Rally is etymologically related to Rail. Rally is the opposite of Decline. Decline is a type of Decrease. Decrease is a synonym of Shrink. 
Fur <--RelatedTo--> Soft <--RelatedTo--> Bed <--UsedFor-- Sheet 
Rail <--EtymologicallyRelatedTo-- Rally <--Antonym--> Decline --IsA--> Decrease <--Synonym--> Shrink 