Northwest is a type of Direction. Mayor can be used for Direction. Mayor is related to Official. 
Diary is a type of Writing. one thing you do when you Writing is Initial. Initial entails/necessarily involves Approve. Approve is related to Like. 
Northwest --IsA--> Direction <--UsedFor-- Mayor <--RelatedTo--> Official 
Diary --IsA--> Writing --HasSubevent--> Initial --Entails--> Approve <--RelatedTo--> Like 