Area is related to House. you are likely to find Jeans in/at/on House. Jeans can be used for Fashion. 
Vocal is related to Speech. Speech is related to Formal. Formal is related to Gentleman. 
Area <--RelatedTo--> House <--AtLocation-- Jeans --UsedFor--> Fashion 
Vocal <--RelatedTo--> Speech <--RelatedTo--> Formal <--RelatedTo--> Gentleman 