Depression is related to Condition. Condition is a synonym of Accident. Accident is related to Mistake. Mistake is the opposite of Perfect. 
you are likely to find Pill in/at/on Jar. Jar is the opposite of Can. Can is related to Vegetable. Vegetable is related to Grass. 
Depression <--RelatedTo--> Condition <--Synonym--> Accident <--RelatedTo--> Mistake <--Antonym--> Perfect 
Pill --AtLocation--> Jar <--Antonym--> Can <--RelatedTo--> Vegetable <--RelatedTo--> Grass 