Sure is related to Promise. Promise is a synonym of Assure. Assure is a type of Persuade. 
Smell is related to Activity. Activity is related to Prayer. you are likely to find Prayer in/at/on Church. Church is a type of Perform. 
Sure <--RelatedTo--> Promise <--Synonym--> Assure --IsA--> Persuade 
Smell <--RelatedTo--> Activity <--RelatedTo--> Prayer --AtLocation--> Church --IsA--> Perform 