Day is a type of Opportunity. Say is a type of Opportunity. Say is related to Declare. 
Disorder is the opposite of Order. Order is related to Request. Request is a synonym of Demand. 
Day --IsA--> Opportunity <--IsA-- Say <--RelatedTo--> Declare 
Disorder <--Antonym--> Order <--RelatedTo--> Request <--Synonym--> Demand 