Day is related to Office. you are likely to find Bureau in/at/on Office. 
Certain is related to District. District is related to Police. Police is a synonym of Law. Ban is a type of Law. 
Day <--RelatedTo--> Office <--AtLocation-- Bureau 
Certain <--RelatedTo--> District <--RelatedTo--> Police <--Synonym--> Law <--IsA-- Ban 