Phone is related to Mobile. Mobile is the opposite of Stable. you are likely to find Leather in/at/on Stable. 
Gentle is the opposite of Brutal. Brutal is similar to Direct. Direct is related to Film. 
Phone <--RelatedTo--> Mobile <--Antonym--> Stable <--AtLocation-- Leather 
Gentle <--Antonym--> Brutal <--SimilarTo--> Direct <--RelatedTo--> Film 