you are likely to find Number in/at/on Mathematics. Mathematics is related to Study. Study is related to Law. Lawmaker is derived from Law. 
Exception is a type of Situation. Situation is related to Debt. Debt is the opposite of Money. 
Number --AtLocation--> Mathematics <--RelatedTo--> Study <--RelatedTo--> Law <--DerivedFrom-- Lawmaker 
Exception --IsA--> Situation <--RelatedTo--> Debt <--Antonym--> Money 