Pressure is a type of Sensation. Pressure is related to Rub. Brush is a type of Rub. Handle is part of Brush. 
Reverse is a synonym of Back. Back is related to Swimming. 
Sensation <--IsA-- Pressure <--RelatedTo--> Rub <--IsA-- Brush <--PartOf-- Handle 
Reverse <--Synonym--> Back <--RelatedTo--> Swimming 