Quality is a synonym of Prime. Prime is the opposite of Bad. Bad is a form of Bid. you are likely to find Feather in/at/on Bid. 
Scent is related to Soap. Soap is related to Tool. Tool can be used for Purpose. 
Quality <--Synonym--> Prime <--Antonym--> Bad --FormOf--> Bid <--AtLocation-- Feather 
Scent <--RelatedTo--> Soap <--RelatedTo--> Tool --UsedFor--> Purpose 