Symptom is part of Disease. Disease is related to Sick. Sick is related to Pain. 
Living is related to Urban. Urban is the opposite of Farm. Farm is related to Ok. 
Symptom --PartOf--> Disease <--RelatedTo--> Sick <--RelatedTo--> Pain 
Living <--RelatedTo--> Urban <--Antonym--> Farm <--RelatedTo--> Ok 