Defend is a type of Prevent. Defend is a synonym of Represent. Represent is related to Standing. Standing is the opposite of Motion. 
Outside is related to Snow. Snow is related to People. People can be Wise. 
Prevent <--IsA-- Defend <--Synonym--> Represent <--RelatedTo--> Standing <--Antonym--> Motion 
Outside <--RelatedTo--> Snow <--RelatedTo--> People --HasProperty--> Wise 