Sofa can be used for Fucking. Fucking is the Sex. Chase wants (to) Sex. Chase is a synonym of Pursuit. 
Water is related to Sail. Sail is related to Direction. 
Sofa --UsedFor--> Fucking --DefinedAs--> Sex <--Desires-- Chase <--Synonym--> Pursuit 
Water <--RelatedTo--> Sail <--RelatedTo--> Direction 