Mayor can be used for Govern. Mayor is related to Government. Government is related to Bank. 
Like is related to Ring. Ring is related to Item. Item is related to Part. Fraction is a type of Part. 
Govern <--UsedFor-- Mayor <--RelatedTo--> Government <--RelatedTo--> Bank 
Like <--RelatedTo--> Ring <--RelatedTo--> Item <--RelatedTo--> Part <--IsA-- Fraction 