Ease is a type of Travel. Travel is a synonym of Movement. Movement is a synonym of Campaign. Campaign is a type of Race. 
you are likely to find Human in/at/on War. Christian is a type of Human. Christian is related to Heaven. Heaven is related to Air. 
Ease --IsA--> Travel <--Synonym--> Movement <--Synonym--> Campaign --IsA--> Race 
War <--AtLocation-- Human <--IsA-- Christian <--RelatedTo--> Heaven <--RelatedTo--> Air 