Engineering is related to Mechanical. Mechanical is related to Car. you are likely to find Oil in/at/on Car. 
Slip is related to Bank. Bank is related to District. Mandate is a type of District. 
Engineering <--RelatedTo--> Mechanical <--RelatedTo--> Car <--AtLocation-- Oil 
Slip <--RelatedTo--> Bank <--RelatedTo--> District <--IsA-- Mandate 