Earth is related to Garden. you are likely to find Stone in/at/on Garden. you are likely to find Stone in/at/on Driveway. 
Frown is the opposite of Laugh. Laugh is related to Hope. Hope is related to Encouraging. Incentive is a type of Encouraging. 
Earth <--RelatedTo--> Garden <--AtLocation-- Stone --AtLocation--> Driveway 
Frown <--Antonym--> Laugh <--RelatedTo--> Hope <--RelatedTo--> Encouraging <--IsA-- Incentive 