Swallow is a type of Bird. you are likely to find Bird in/at/on Lawn. Lawn is related to Front. Front is a synonym of Look. 
Price is related to Cheap. Cheap is related to Sale. 
Swallow --IsA--> Bird --AtLocation--> Lawn <--RelatedTo--> Front <--Synonym--> Look 
Price <--RelatedTo--> Cheap <--RelatedTo--> Sale 