Afternoon is related to High. High is related to Wave. Wave is related to Permanent. Permanent is the opposite of Change. 
Smoke can be Toxic. Smoke is related to Related. 
Afternoon <--RelatedTo--> High <--RelatedTo--> Wave <--RelatedTo--> Permanent <--Antonym--> Change 
Toxic <--HasProperty-- Smoke <--RelatedTo--> Related 